另一个学生约翰说：“这很有用，提高了学生的能力。”

"It's very helpful and improves students' abilities," said John, another student.

youdao

这很有用，但可能不是您想要的功能。

This is useful, but it might not be what you want.

youdao

也许您会发现这很有用。

Perhaps you will find this useful.

youdao

But imagine I actually wanted to gather them together. I wanted to collect them, so I could do something with them.

把那些除数都显示出来,这很有用，但是请想想下我想要，把它们放在一块。

麻省理工公开课 - 计算机科学及编程导论课程节选

And it's a useful pattern when you want to express that your feelings have been hurt or that you're not liking something,

当你想表达你在情感上受到了伤害或者不喜欢某件事的时候，这是个很有用的句型。

I get so upset 课堂 - SpeakingMax英语口语达人

So it's a useful way of not quite knowing in advance what you want to put in a string, but being able to create strings, phrases, sentences, dynamically.

这是一个很有用的方法，如果你之前不是很了解,在句子中要加入什么，但是这个方法可以,动态地创建字符串，短语，句子。

哈佛公开课 - 计算机科学课程节选