Unless it is signed, a cheque is invalid.

支票除非签字，否则是无效。

[B] the ineffective enforcement of privacy law.

隐私法无效实施。

Sadly, each of these techniques has been tested scientifically and shown to be ineffective.

遗憾是，这些方法技术都经过科测试，结果都是无效。

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

长时间不休息被证明是无效。

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

如果你不遵循这些步骤，你方法可能是无效。

C) They prove ineffective in helping mental patients.

C) 社区卫生服务帮助心理疾患方面被证明是无效。

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

小偿还所借钱而签契约是无效。

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

我会告诉你这些无效惯是什么，以及如何改变它们。

The take-home messages are oral phenylephrine is inaffective as a nasal decongestant but safe.

带回家信息是口服苯肾上腺素作减充血剂是无效，但安全。

It led to further similarly conclusive studies that phenylephrine was ineffective.

这导致进一步类似结论性研究，即苯肾上腺素是无效。

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

根据证据，重读通常是非常无效。

The anarchists would say that they want to show how policing is ineffectual.

无政府主义者会说，他们想表明警务是多么无效。

53. Why does Tenette Smith think a combination of teaching methods is ineffective?

53.什么特内特·史密斯认多种教方法组合是无效？

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

但这场疫情表明，这种做法长期内是无效。

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药物管制制度是无效。

That's OK then, because for a working monkey the PM624 is no good at all.

那就好，因PM624表格对要工作猴子无效。

Nor with such a man could you expect the appeal to conscience to be effective.

对于这样一个人，想要诉诸他良心也是毫无效果。

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

所以把这一切联系起来，它也可能是无效。

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无效重症癫痫患者。

Donald Trump has called those races also illegal and invalid and that's worried some Republicans.

唐纳德·特朗普称这些竞选也是非法和无效，这让一些共和党人感到担忧。