I know it has happened before (and it will happen again) that someone will not be as smooth as they should be in a low airspeed situation, and a departure is going to happen.

• 我知道曾经发生过这样的事（这样事还会发生），有些人没有能够像他们本应该做的那样在低速情况下平稳地控制飞机，于是发生了失速的现象。