这里是一些有用的建议，可以使你的旅途更舒适。

Here are some helpful hints to make your journey easier.

《柯林斯英汉双解大词典》

一个有用的建议是，如果你所处的状态和位置与你学习它们的时候完全相同，那么你更有可能记住它们。

One useful tip is that things are more likely to be remembered if you are in exactly the same state and place as you were when you learned them.

youdao

你的关系里什么是有用的，什么不是？

What works in your relationship and what doesn't?

youdao

So, whether or not the email is addressed specifically to you in like the two field or if maybe you were BCC'd or it's a big email list of which you're just part, that could signify that this is in fact useful for you.

所以，不管这个邮件是不是,单独发给你的,或者这个邮件有一个大的邮件列表,而你正在其中，其实这也暗示了,这个邮件对你是有用的。

哈佛公开课 - 计算机科学课程节选

And you're telling them about what's useful in life, what you need to do in life.

你在告诉他们生活中什么是有用的，什么是你们必须做的。

It's important 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