It is not half as useful as logic.

“它比不上逻辑学一半的用途。

For no practical, I have empirical or hands-on, useful.

对于不实际的，我有“经验性的”或“动手的”，“有用的”。

Some incredibly useful, and others, not so much.

有些发明很实用，有些则不然。

Her campaign against insects seemed sensible and useful.

它和昆虫作战似乎是有道理的，是有用的。

But I find things like that very useful for my writing.

但是我发现类似这样的事情对我的写作很有用。

Something this useful is probably pretty expensive except it's not.

这么有用的东西可能很贵，但其实不然。

Turns out books have a lot more useful information than YouTube.

书本里的信息比油管更有用。

When speaking or writing in English, buttons can be just as useful.

在口语和写作上，纽扣照样很管用。

I think many of you will find it very, very useful, indeed.

我想你们中的许多人确实会发现它非常非常有用。

I was astounded at how really useful “thematic thinking” turned out to be.

发现“主题思考”居然这么有用，让我大吃一惊。

Here's a little trick that I've found pretty useful with Claire.

教克莱尔使用电器的时候 我发明了个小诀窍。

It's a pretty cool thing, quite useful.

是一个很酷的东西，很有用。

What kind of technology do you find most useful for your work or study?

你觉得哪种科技对你的工作或学习最有用？

A barometer is useful in predicting the weather.

气压计在预测天气方面很有用。

So it can be a really, really useful hydroponic medium.

所以它可以成为一种非常有用的水培介质。

" Well, can't you find something useful to occupy yourself? "

“唉，你就不能给自己找一些有意义的事情做吗？”

Many are in locations that are too difficult to reach or simply not very useful.

许多点的位置难以到达，或是用处不大。

I don't think you need me to tell you just how useful breadcrumbs are.

我想你不需要我来告诉你面包屑有多有用。

I hope you found this useful. If you did, please click on the thumbs up.

我希望这对你有用。如果你喜欢本期视频，请点赞。

Yet, for all that, it's being useful there.

但尽管如此 它还是有用的。