在一月一共有四个过生日的。

There are four birthdays in January.

youdao

因此一共有四个阶段。

So we get four phases.

youdao

在围困下的画廊，她仍然会得到正常的时间一多，一共有四个。

She'll still get one more at the normal time in the Galleries Under Siege, for a total of four.

youdao

So we can have four total hydrogens bonding here, - and we can think about how to describe these carbon- carbon bonds.

我们这里一共有四个氢原子成键，我们可以考虑怎么来-,描述碳碳键。

麻省理工公开课 - 化学原理课程节选