1.go through经历;经受
He was going through a very difficult time...
他正处于非常艰难的时期 。
2.arrive at到达
As soon as you arrive at your destination, step out of the aircraft and reset your wristwatch.
你一到达目的地,就走出飞机并重新设置手表时间 。
3.on guard警惕;提防
He is constantly on guard against any threat of humiliation.
他时刻提防着任何有辱尊严之事 。