It is not half as useful as logic.

“它比不上逻辑学一半。

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

对于不实际，我有“经验性”或“动手”，“有”。

Some incredibly useful, and others, not so much.

有些发明很实，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，是有。

And I think my language skills could prove very useful down the road.

而且我认为我语言技能在将来会被证明是非常有。

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

“唉，你就不能给自己找一些有意义事情做吗？”

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

但是我发现类似这样事情对我写作很有。

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

这么有东西可能很贵，但其实不然。

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

书本里信息比油管更有。

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。

Why don't you take something really useful, like...a bouncy hopper?

你为什么不带点真正有东西，比如… … 一个有弹性跳跳球？一个荒岛上。

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

我想你们中许多人确实会发现它非常非常有。

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

发现“主题思考”居然这么有，让我大吃一惊。

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

教克莱尔使电器时候 我发明了个诀窍。

It's a pretty cool thing, quite useful.

是一个很酷东西，很有。

But I was worried that studying aerospace engineering wasn't the most useful.

但我感到担心，觉得学习航天工程对此并无太大帮助。

A barometer is useful in predicting the weather.

气压计在预测天气方面很有。

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

所以它可以成为一种非常有水培介质。

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

许多点位置难以到达，或是处不大。

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。