The donkey is an extremely useful animal.

驴子是一种非常有用的动物。

This expression is extremely useful for English learners.

这个表达对英语学习者非常有用。

Small talk is extremely useful when first meeting others.

与人初次见面时，闲聊是非常管用的。

Absolutely. Talking to the department managers was extremely useful.

当然。跟部门经理们的谈话非常有用。

In fact, typically they were extremely useful in their day.

事实上，它们通常在它们的时代非常有用。

And I have an extremely useful lesson for you today.

今天我给大家准备了一节非常实用的课程。

The fact that this conduction only works in one direction is extremely useful!

二极管只能单向导电的特性对我们非常有用！

Those who understand how extremely useful white cables can be, and those who don't.

一种人知道白色连接线到底有多好用，另一种人不知道。

They're really common in conversations, they're extremely useful to learn and practise.

它们在对话中非常常见，进行学习和练习是非常有用的。

But just like the story of the point particle, it may be an extremely useful story.

不过就如同点粒子模型一般，弦理论可以是一个非常实用的理论。

You've learned over twenty extremely useful expressions and phrases that are used when talking on the phone.

你已经学会了二十多个非常有用的表达方式和短语，它们是在电话交谈时使用的。

One such technique is introducing contrast. This is extremely useful when presenting a positive spin on a negative issue.

技巧之一是营造反差。当你需要从负面事件中寻找出积极因素时这一点很有用。

So I think this is actually extremely useful.

所以我认为这实际上非常有用。

" Invaluable" means really valuable – extremely valuable or extremely useful.

。 “Invaluable” 是指真正有价值——极有价值或极有用处。

You're wanted badly and may be extremely useful.

我们非常需要你， 而且你可能非常有用。

Such tools can make digital material extremely useful, she argues.

她认为，此类工具可以使数字材料变得非常有用。

It's our nature as humans, and it's extremely useful.

这是我们作为人类的天性，而且非常有用。

Studying twins is extremely useful in examining the effects of genetic and environmental factors that can influence inherited traits across generations.

研究双胞胎在检查遗传和环境因素对代际间遗传特征影响方面非常有用。

And remember, if you're type O negative, you're an extremely useful universal donor.

请记住， 如果您是 O 型阴性，那么您就是一个非常有用的通用捐赠者。

Overall, it's extremely useful to have compression techniques for all the types of data I discussed today.

总的来说，对我今天讨论的所有类型的数据使用压缩技术都非常有用。