How can Trump make an invalid decision？The decision is void and false.

特朗普怎么会做出一个效的决定？这个决定是效的，是错的。

Unless it is signed, a cheque is invalid.

支票除签了字，否则是效的。

Words are quite ineffectual methods of communication.

语言是相当效的沟通方式。

Rereading generally, according to the evidence, is pretty ineffective.

根据证据，重读通是效的。

Today we're going to discuss the latest lies about vaccines not working...

今天我们要讨论关于疫苗效的最新谣言。

Studying for long periods without taking breaks has been proven to be ineffective.

长时间不休息的学习证明是效的。

This combination of methods is ineffective.

这种组合的方法是效的。

It's been largely ineffective in its political arms.

在政治上，它在很大程度上是效的。

Now. Why have all your references been crossed off?

好了 为的证书是效的?

An agreement signed by a child, to repay borrowed money, is void.

小孩为了偿还所借的钱而签的契约是效的。

But the pandemic showed that it is not effective over a long period of time.

但这场疫情表明，这种做法在长期内是效的。

And so to tie it all, it also can be ineffective.

所以把这一切联系起来，它也可能是效的。

I'll show you what these ineffective habits are, and how you can change them.

我会告诉这些效的习惯是么，以及如何改变它们。

It's designed to help those with severe epilepsy when typical medications and treatments aren't working.

治疗对象是那些典型药物和临床治疗效的重症癫痫患者。

If you're not following these steps, you may have an ineffective study method.

如果不遵循这些步骤，的学习方法可能是效的。

There is growing awareness in government that Thailand's punitive drug-control regime is ineffective.

政府越来越意识到泰国惩罚性的药物管制制度是效的。

They and other opponents say a border wall is wasteful and ineffective.

他们和其他反对者说，边境隔离墙是浪费和效的。

C) They prove ineffective in helping mental patients.

C) 社区卫生服务在帮助心理疾患方面证明是效的。

As a physician, I know the most costly and dramatic measures may be ineffective and painful.

作为一名医生，我深知最昂贵和最激进的手段也可能是效的和痛苦的。

And that means trying new things, investing in what’s working, and fixing what’s not.

这意味着要革新，在有成效的地方投资，修正效的措施。