1、let's go
2、f it is some distant suburb county or even farther, i have to leave on friday night on a bus.如果去比较远的郊县或者更远的地方，星期五晚上就得坐车出发。
3、allowing for the bad weather, we should set off soon考虑到天气不好，我们应该立即出发。
4、when he set off, the solo record stood at 93 days他出发的时候，单人航海世界记录是93天。
5、rain or shine, well set out tomorrow.不论天气好坏，我们明天出发。