我们到达时，火车正要启动。

When we arrived, the train was just going to start.

youdao

在等着火车启动时，我们兴奋不已。

While we were waiting for the train to start we felt excited.

youdao

在等着火车启动时，我们兴奋不已。

While we were waiting for the train to start we felt excited.

youdao