21．city（pl．cities）n．＝a large and important town意思是“城市”。例如：
Shanghai is one of the biggest cities in the world．上海是世界上最大的城市之一。
Ashland is a small town about eight kilometres from the city of Richmond．阿什兰德是一个小城镇，离里士满市大约8公里。
22．climb／klaim／ v．＝go up sth意思是“爬；攀登；爬升；使（飞机）爬升”。例如：
climb a mountain 登山
Han Meimei is climbing the ladder．韩梅梅正在爬梯子。
Do you think you can climb that tree？你认为你能爬上那棵树吗？
Monkeys climb well．猴子善于攀爬。
The plane climbed quickly．飞机迅速升高。
It became hotter as the sun climbed in the sky．随着太阳的升高，天气越来越热了。
在以-mb结尾的单词中，字母b不发音。如：comb ／k
um／n．梳子。
23．cloud n．＝visible water vapor floating high in the air 意思是“云”。例如：
There are more clouds today than yesterday．今天的云比昨天多。
The sky is covered with dark clouds．天空乌云密布。
它的形容词是cloudy ／`klaudi ／＝covered with clouds多云的；阴天的。例如：
What's the weather like today？It's cloudy．今天天气怎么样？多云。
It's a bit cloudy today．今天有点阴。
表示天气的名词加后缀-y变成形容词。如：sun→sunny；rain→rainy；snow→snowy。
24．cold（1）adj．①＝not hot；without heat意思是“冷的；寒冷的”。例如：
Was it cold yesterday？昨天冷吗？a cold drink一杯冷饮
②＝unkind；unfriendly意思是“冷淡的，不热情的”。例如：
She is always cold to strangers．她对陌生人总是很冷淡。
（2）n．①＝the low temperature；cold weather意思是“寒冷”。例如：
Don't stand outside in the cold．不要站在外面寒冷的天气中。
②＝a mild illness which often makes you blow your nose意思是“着凉；感冒”。例如：
catch／take（a）cold 着凉，伤风；have a cold 伤风。
Half the boys were absent with colds．半数的学生因感冒而缺席。
25．come over的意思是“过来；顺便来访”。例如：
Come over to Beijing and stay here for a week if you have time．如果你有时间，请来北京住一周。
26．come out＝appear意思是“出来；（花儿）开放；出现”。例如：
The sun will come out soon．太阳很快就会出来的。
27．complain vi．＝say that one is not satisfied，that sth．is wrong，that one is suffering，意为“抱怨；发牢骚”。例如：
They complained about the food．他们抱怨这糟糕的食物。
Linda is always complaining about something．琳达总是满腹牢骚。
They complained that the price of books had increased．他们抱怨书的价格提高了。
She complains that he does not work hard．她抱怨他不努力工作。
28．deer（pl．deer）n．＝a four-footed animal which lives in woods，the male of which has horns，意为“鹿”。例如：
a drove of deer 鹿群。
He runs like a deer．他跑起来像鹿一样敏捷。
在英语中，与deer一样，其单数和复数形式相同的名词还有：fish，Chinese，Japanese，sheep等等。
29．die vi．＝come to the end of life意思是“死”。例如：
All living things must die．所有生物都必然死亡。
death是名词，只用作主语或宾语。如：He was happy to the day of his death．一直到死他都很幸福。
die是瞬时性动词，它的完成时不能与表示一段时间的状语连用。例如：那个老人死了半年了。
The old man has died for half a year．（误）
The old man has been dead for half a year．（正）
The old man died half a year ago．（正）
30．discuss vt．＝talk about意思是“谈论；讨论”。例如：discuss a question with sb．与某人讨论问题。
I want to discuss your work with you．我想和你一起讨论你的工作。
We discussed when to go．我们商量什么时候动身。
They discussed selling the house．他们商量卖房子的事。
GOOD!!!!!!!!!
