当警察到达时，他已毁了所有的证据。

When the police arrived, he had already destroyed all the evidence.

youdao

当警察到达时，小偷已经跑掉了。(跑掉早发生)。

When the police arrived, the thief had already run away.

youdao

当警察到达时，那些嫌疑犯已经不见了，可能事先有人给他们通风报信。

When the police arrived, the suspects had disappeared. Someone might have tipped them off.

youdao

当警察到达河岸时，他们逃进了丛林。

When the police hit the shore, they fled into the jungle.

youdao

当警察到达河岸时，他们逃进了丛林。

When the police hit the shore, they fled into the jungle.

youdao