它总是使用动词第三人称单数的形式，尽管在英语中“我们”的动词总是复数。
It always take the third person singular form of the verb even though it's always plural in English.
这就是我们用复数形式来描述弦理论，因为现在有各种不同的弦理论，试图来解释所有的问题。
That's why we speak of string theories in the plural, because there are several different string theories that attempt to make it all work.
在那里，我们为每个重复工作标上价格，并用总的重复数(15)与它相乘。
From there, we attached a dollar amount to each iteration of work, and multiplied it by the total number of iterations (15).
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