alleged eyewitness所谓的目击者

一个反问把「巧合」二字钉在对方论点上，逼他为可能性付出代价。

Aren't you asking us to accept ...?

质疑对方说法太牵强时用；语气带刺，别对客户用。

You're asking us to believe an amazing coincidence. ／ That's a coincidence too far, isn't it?

中性

Aren't you 连读，incredible coincidence 逐词重读。

Aren't you asking us to accept a very lucky coincidence? 你这不是要我们相信一个天大的巧合吗？

一句「得了吧」加一句常识，把对方追问的底气一下抽掉。

Nobody can know a thing like that.

反驳别人装作很有把握时用；对上级说会显得不敬。

No one can be sure of that. ／ You can't possibly know that for certain.

口语

come on 轻快，a thing like that 连读收尾。

Nobody can know a thing like that in advance. 这种事谁也没法提前知道。

先夸一句「聪明把戏」，再一句反问，软刀子比硬顶更扎人。

Supposing you tell me what it proves.

表面客气、实则逼问时用；正式质问场合别这么油。

So tell me what that actually proves. ／ Clever trick, but what does it show?

口语

pulled a 连读，bright trick 重读，what it proves 放慢。

Nice trick, but supposing you tell me what it proves. 把戏不错，那你说说它能证明什么。

一句话把常识摆上台面，戳破对方在物证上的双重标准。

It's against the law to ...

说明某件事不合规时能用；日常闲聊别拿法律压人，对朋友会显得生硬。

It's illegal to sell those knives. ／ The law bans buying or selling them.

正式

against the 连读，buy or sell 并列重读。

It's against the law to park here after six. 六点后在这儿停车是违法的。