命令部队出发

order the troops to set out

收拾行装，准备出发

pack and prepare to leave

代表们明天出发。

The delegates will leave tomorrow.

今天将出发，我是来和你们告别的。

I'm leaving today so I've come to say goodbye.

出发日期还没有确定。

The date of departure is still unconfirmed.

从整体利益出发

in view of overall interests

一切应当从实际出发。

Everything should take reality as its starting point.