I returned a few moments later.

片刻后我回来了。

A few moments later he was dead.

过了一会儿，他已经死了。

Chen Wei returns a few moments later.

一会儿后，陈威回来了。

A few moments later he heard footsteps.

过了一会儿，他听见了脚步声。

A few moments later, she left the oasis.

不一会儿她便离开了绿洲。