我们午饭后出发。

We'll ___head ___off after lunch.

我抓起我的背包和手杖也出发了，尽管我不信任领队——但我能做什么？

I grabbed my rucksack and walking stick and ___headed ___off too, even though I didn't trust the leader - but what could I do?

他们决定早点出发以避开交通。

They decided to ___head ___off early to avoid the traffic.