In consequence; therefore; in that case.

因；故；于是；那么。

Next; immediately after.

继而；随即。

The cavalry led the way, then came the artillery.

马队之后跟着炮队。

At the time.

那时。

Later; at another time.

以后；然后。

Existing at the time mentioned.

那时的。

A time specifically mentioned.

那个时候。