学号的英文：
registration number

There is no method in the way they do registration.
他们登记的毫无条理。

Would you fill in this registration form?
麻烦填写这张住宿登记表。

Did you see the registration number?
你看见车牌号了吗？

Why had you no registration number?
为什么你没有车牌号？

The producer or registrant shall apply for the registration renewal every 30 year.
生产商或注册人应每30年申请办理注册商标的续展手续。

The number was fifty.
该数字为五十。

There is safety in numbers
人多势众

It was an irrational number.
这是一个无理数。

Which number on the card is a prime number?
在卡片上哪一个数字是最初的数字？

The number raised to the logarithm of a designated number in order to produce that designated number.
被升到指定数字的对数上的数量,是为了得到那被指定的数目。