Unless it is signed, a cheque is invalid.

支票除非签了字，否则效的。

[B] the ineffective enforcement of privacy law.

隐私法的效实施。

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

遗憾的，这些方法技术都经过了科学的测试，结果都效的。

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

长时间不休息的学习被证明效的。

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

如果你不遵循这些步骤，你的学习方法可效的。

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效的。

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

我会告诉你这些效的习惯什么，以及如何改变它们。

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

带回家的信息口服苯肾上腺素作为减充血剂效的，但安全。

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

这导致了进一步类似的结论性研究，即苯肾上腺素效的。

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

根据证据，重读通常非常效的。

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

政府主义者会说，他们想表明警务多么的效。

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

53.为什么特内特·史密斯认为多种教学方法的组合效的？

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

但这场疫情表明，这种做法长期内效的。

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效的。

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

那就好，因为PM624表格对要工作的猴子效。

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

对于这样一个人，想要诉诸他的良心也毫效果的。

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

所以把这一切联系起来，它也可效的。

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

治疗对象那些典型药物和临床治疗效的重症癫痫患者。

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非法和效的，这让一些共和党人感到担忧。