The engine began running, sputtered, and broke down completely.

发动机开始运转，接着噼啪作响，然后就彻底熄火了。

金山词霸

His index finger tightened on the trigger but then relaxed again.

他的食指扣住扳机,然后又松开了.

《简明英汉词典》

This is better, but then again it costs more.

这个好一点, 但也贵一些.

《简明英汉词典》

The new company did well at first, but then ran into trouble.

这家新公司最初办得还不错, 但后来就陷入困境了.

《简明英汉词典》

This is better, but then again it is more expensive.

这比较好, 可就是贵了一点.

《现代英汉综合大词典》

We crowded round eagerly, but then felt disappointed.

我们都急切地围拢上去, 可都感到大失所望.

《简明英汉词典》

He hesitated briefly, as if to object. But he reconsidered the matter.

他犹豫了片刻，似乎想要反对，但重新考虑了这件事。

金山词霸

Names had been cut on the wall, but then had been scratched out.

墙上曾刻着名字, 但后来被刮掉了.

《简明英汉词典》

He drowsed off, but then woke up abruptly, as though someone had called his name.

他打了个盹, 但突然又醒了, 好像是有人在喊他的名字.

《简明英汉词典》

Brooks was abreast with the leading runner for a few minutes but then fell behind.

布鲁克斯赶上领先的赛跑运动员好几分钟,可是后来落后了.

《简明英汉词典》

You could chance upon a generous and supportive friend, but, then again, you may not.

你可能会偶然遇到一位慷慨又支持你的朋友，但话又说回来，你也可能不会。

金山词霸

But then, one day, his dreams were shattered, cruelly and bitterly shattered.

但是有一天他的幻梦终于被打破了, 很残酷地打破了.

汉英文学 - 家（1-26） - 家（1-26）

He sounded sincere, but then, he always did.

他听起来很真诚，可是话说回来，他向来如此。

辞典例句

He was rich enough but then men are always greedy.

他的钱是够多的了.

教父部分

And you are no better -- But then, I'm at fault too.

你也好不了多少 ---- 不过嘛, 我也有错.

飘（部分）