Latin nouns have case, number and gender.
拉丁语名词有格、数和性。
They have arrested a number of leading opposition politicians.
他们已经逮捕了一些主要的反对党政治家。
We have increased the number of teachers but the size of the classes hasn't changed proportionately.
我们已增加了教师的数量，但班级的大小并没有成比例地改变。
I'm trying to get in touch with Jane. Do you have her number?
我正在设法和简取得联系。你有她的电话号码吗？
Regular repeating actions such as sound waves, light waves, or radio waves have a certain frequency, or number of waves per second.
有规律的重复活动如声波、光波、无线电波都有一个特定的频率，或者说是每秒的波动次数。
Just to put you in the picture—there have been a number of changes here recently.
只是让你了解一下情况吧，最近这里出现了许多变化。
A distressingly large number of firms have been breaking the rules.
违规经营的公司数目之大，令人担忧。
A number of local people have been arrested for trying to obstruct trucks loaded with logs.
许多当地人因试图阻拦装有原木的卡车被逮捕了。
Russian workers have staged a number of strikes in protest at the republic's declaration of independence.
俄罗斯工人已经举行了多次罢工，抗议该共和国宣布独立。
Security officers have carried out a number of house-to-house searches.
安保人员已经多次挨家挨户地搜查。
Do you have Betty's phone number?
你有贝蒂的电话号码吗？
You have my number. Please feel free to call me for any further questions.
您有我的电话号码。如果还有任何问题，请随时给我打电话。
Could I have your phone number?
能告诉我你的电话号码吗？
And could I have your phone number?
能告诉我你的电话号码吗？
Nowadays, a lot of medical doctors have learned acupuncture techniques; so have a number of dentists.
如今，许多医生已经学会了针灸技术，一些牙医也是如此。
I have a huge number of ties because I never throw them away.
我有非常多的领带，因为我从不扔掉它们。
No, I don't know his number—I have quite enough trouble remembering my own.
不，我不知道他的号码，我光记自己的号码就够困难的了。
A number of people have been employed to deal with the backlog of work.
已雇来一些人处理积压的工作。
We have been approached by a number of companies that are interested in our product.
一些对我们的产品感兴趣的公司已和我们接洽。
I have a number of things to do today.
我今天有许多事情要做。
A number of simplifications have been made to the taxation system.
税收制度已经历过多次简化。
If you have any issues, please call this number.
如有问题，请拨打这个电话号码。
A number of products have been developed which are permeable to air and water.
已开发出许多可渗水透气的产品。
A small number – five, to be exact – have been bad.
一个小数目–确切地说是5–已经很糟了。
Protesters have been putting up barricades across a number of major intersections.
抗议者们已在许多主要十字路口搭建了路障。
Sorry, I must have dialled the wrong number.
对不起，我一定是拨错电话号码了。
A number of roads have been blocked by fallen trees.
一些道路被倒下的树堵住了。
A number of colleges have amalgamated to form the new university.
一些学院联合组成了这所新大学。
A number of parents have voiced concern about their children's safety.
一些家长对他们子女的安全表示了担心。
A number of bombs have exploded, seriously injuring at least five people.
一些炸弹爆炸了，至少5人严重受伤。
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