at a crack一口气

把阴谋说成一台机器，一旦启动，人的意志就不算了。

the machinery had started to move and nothing could stop it

事情一旦启动就收不住时能用，把责任推给惯性。

the wheels were turning and no one could stop them ／ once it started, nothing could stop it

中性

machinery had 连读，nothing could stop it 放慢。

Once the machinery started to move, nothing could stop it. 机器一旦开动，谁都拦不住了。

把推销词说得像忠告，正因如此才最危险。

The only way you can ... is by ...

劝人接受某个方案时能用，先强调唯一性，再给出做法。

the only way to protect yourself is to ... ／ your one option is to ...

正式

The only way 重读，is by 连读。

The only way you can finish on time is by cutting the scope. 想按时完成，唯一的办法就是砍掉一部分内容。

把穷归到五顶帽子上，一句家常挖苦抖出夫妻积怨。

What keeps us broke is you doing something

把家庭矛盾归到一件具体小事上时能用，带点刻薄。

what keeps us broke is your spending ／ the reason we're broke is you

口语

What keeps us broke 连读，five hats 重音。

What keeps us broke is you ordering takeout every night. 让咱们攒不下钱的，是你天天点外卖。

一句冷冰冰的旁白把骗签说穿，without his knowing 轻描淡写，反而更瘆人。

get someone to ... without his knowing ...

交代一件绕着对方做成的事时用，写小说或事后复盘可以，日常别拿来说笑，容易听着像教人使坏。

I had him sign without knowing what it was. ／ He signed it without ever reading it.

中性

had to get him to 连读，without his knowing 放慢。

Get her to sign without her knowing what it covers. 让她签字，别让她知道保的是什么。