unit 13单词讲解详案
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Unit 13
1,Cube n立方体；立方形；正六面体
The cube of 5 is 125. 5的立方是125。
The cube root of 27 is 3
Cubic adj.立方体的, 立方的a cubic meter 立方米
Square n.正方形 平方
2，sailor n.海员, 水手, 不大会晕船的人, 船员
sail v.航行(于) vi.启航, 开船n.帆, 篷, 航行
go sailing 坐船航行 marine舰队海洋的 mariner 水手
3， benefit n.利益, 好处vt.有益于, 有助于vi.受益do good to
a public benefit公益disability benefits残废抚恤金(pl)救济金
be of benefit to the people对人民有好处[U]
This dictionary will be of great benefit to me.这部字典将对我有很大裨益。
Exercise benefits our health.运动有益于我们的健康。
We benefit by [from] daily exercises.每天做操对我们有益。
for the benefit of为了...的好处
It is said Yogo is of great benefit to human health.据说瑜咖功对人体健康有极大好处。
I did it for his benefit. 我做这个是为了帮助他。
The plants benefited from the rain. 植物得益于这场雨。
4， transport n 运输 vt.传送, 运输,
The goods were transported by train. 货物是用火车来运输的。transportation交通业
5， property n.财产, 所有物, 所有权, 性质, 特性
This car is my property. 这车是我的财产。
Many plants have medicinal properties. 许多植物具有药性。
belongings possession property wealth
6，range n.山脉vt.排列vi.平行, 延伸
range from… to…从……到……不等 vary from to
Tempertures here range from 10℃to 30℃
Prices ranged from 5 to 10 dollars.
a range of mountains一列山脉
a range of pictures 一系列画片
the annual range of temperature每年的温度变化范围
a wide range of knowledge广博的知识
7，all the way adv.从远道, 自始至终, 一路上
Jack climbed all the way to the top of the tree.他一直爬上了树顶。
All the way back, they talked about films.
all the time adv.始终
8， unique adj.唯一的, 独特的
very unique或 more unique than不正确的 nearly unique和 almost unique是可接受的
9，hydrogen 氢 希腊语 hudra 水 + -gen 产生，变成
oxygen 氧
-gen表示“被生成”，“生成的”
10， relative n.亲戚, 关系词 adj.有关系的, 相对的absolute
After his troubles, he's now in relative comfort. 困境过后，他现在比较舒服了。
（与to连用）关于…的；有关…的
the facts that are relative to this question 与这个问题有关的事实
the facts relative to the problem与此问题有关的事实
live in relative comfort生活得较为舒适
be relative to和...成比例; 和...有关系; 随...为转移
relation n.关系, 联系, 叙述, 故事, 亲戚have relation to有关;和...有关系
relationship n.关系, 关联
The teacher has a very good relationship with her students. 这位老师和学生们关系很好。
What is your relationship to the victim?
Relate vt.叙述, 讲, 使联系, 发生关系
relate to v.涉及
all the papers that relate to this subject有关这个问题的所有论文
theory of relativity相对论relativism
11, solid n.固体, 立体adj.固体的 纯粹的
He's still too ill to take solids. 他病得还很重，不能吃固体食物。
When water freezes , it becomes solid.
Liquid n.液体,adj.液体的
Gas n.气体
12, freeze v.(使)结冰, (使)冷冻, 冻结
freezing adj.冰冻的, 严寒的freezing air冷空气
freezing point 【物】冰点, 凝冻点a freezing glance冷淡的一瞥
13, pure
adj.纯的, 纯粹的, 纯净的, 无垢的, 纯洁的, 完美的, 抽象的
pure gold 纯金
The water in mountain rivers is usually pure. 在山间河流中的水通常是纯净的。
pure English 纯正英语a pure mind 心地纯洁
It was a pure accident.这全然是一次意外事故。
by pure chance 全凭运气 pure science 纯科学
applied impure (非实用的)
14, dense adj.密集的, 浓厚的 density n.密度
15, mass n.块, 大多数, 质量, 群众, 大量
adj.群众的, 大规模的, 集中的vt.使集合vi.聚集
Before the rain, the sky was a mass of clouds. 下雨前，天空有一团云。
（常与of连用）许多；大量
a mass of hot air一团热空气
I've masses of work to do.我有大量工作要去做。
the masses群众, 民众
Troops are massing on the frontier.军队在边境集结。
Dark clouds massed, and we expected rain.乌云密集, 我们企盼下雨。
mass production大宗生产
a mass-circulation magazine大量发行的杂志
16, float n.漂流物v浮动, 飘浮, 散播,
Wood floats on water. 木头漂浮在水上。
A feather floated down on the wind.一根羽毛随风飘落。
The logs float down the river. 木头沿河漂流。
The smell of roses floated around.玫瑰花的芳香在四周飘荡。
floatbridge浮桥,
on the float漂浮着
sink .沉
17, take (full) advantage of v.利用 make full use of
take advantage of sb.v.捉弄某人
take advantage of sth.v.趁机利用
18, decrease n.减少, 减少之量v.减少
The number of children in the school has decreased this year. 今年在校的儿童人数减少了。
on the decrease在减少中, 在下降中
increase增加
19, substance n.物质, 实质, 主旨
in substance 实质上,本质上,大体上
20, centigrade
adj.分为百度的, 百分度的, 摄氏温度的
40℃ forty degrees centigrade.
21, absorb vt.吸收, 吸引
This job absorbs all of my time. 这件工作占有了我的全部时间。
to absorb the full meaning of a remark 理解一句话的全部意义take in
He is absorbed in study.他专心读书。
be absorbed in全神贯注在..., 一心从事, 热衷于put heart into
absorb sb.'s attention吸引某人注意
22, give offv.发出(蒸汽、光等)，长出（枝、杈等）
Boiled water gives off steam. The flowers gave off a pleasant smell
23, thus adv.因而, 从而, 这样, 如此
He sold his farm and thus he had enough money for his journey.
他卖掉了农场，这样他就有足够的钱旅行了。
There has been no rain — thus, the crops are drying. 天没下雨，因此庄稼要枯死了。
thus far至今，迄今
as thus这样, 因此, 这样一来
thus much这么多; 到这里为止
24, stable adj.稳定的n厩；马房
Is that ladder stable? 那架梯子平稳吗？
a man of stable character性格坚定的人
He is a very stable person.他是一个非常可靠的人。
25, sense n.官能, 感觉, 判断力vt.感到, 理解, 认识
He has a good sense of smell. 他的嗅觉很灵敏。
a good business sense 有经济头脑
make sense有 意义；意思清楚；有道理
He sensed that something had happened in his house.
Sensitive adj.敏感的, 灵敏的Insensitive
be sensitive to对...敏感, 易感受...
the eyes are sensitive to light.眼睛对光敏感。
She is sensitive to what people think of her她很敏感人们对她是怎么想的。
26, steady
adj.稳固的, 稳定的, 坚定的, 扎实的, 坚定不移的v.(使)稳定, (使)稳固
as steady as a rock稳如磐石
making steady progress取得稳定的进步
steady rain连绵的雨
a steady man踏实的人
steady in one's purpose意志坚定的
27, motion.运动, 动作v.运动movement
the movement for liberation 解放运动
motion and rest 运动和静止
28，call in v.召集, 召来, 来访
29，nurse .护士, 保姆vt.护理, 看护
nursing n.看护, 养育nursery 托儿所
30，recreation消遣, 娱乐
recreate v.(使)得到休养, (使)得到娱乐
entertainment.款待, 娱乐, 娱乐表演
31， variety n.变化, 多样性,，种类
种种；各类
The shopping-centre sells a variety of goods.这个购物中心出售许多种商品。
At school we learn a variety of things. 在学校我们学习各种东西。
（与of连用）变种
new varieties of wheat 小麦的新品种
32， define vt.定义, 详细说明
definition n.定义, 解说
be blind to
be deaf to
be good to
be known to
be used to
be relative to
be similar to
be married to
be close to
be polite to
be harmful to
be equal to
see to
give birth to
owe… to
refer to
put an end to
look forward to
drink to
devote to
remember to
add to
add up to
set fire to
stick to

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