drop-out

After the crash,onlookers said that the plane had suddenly dropped down out of the sky.

飞机毁后旁观者说飞机是突然从天上掉下来。

He dropped out of college and became a beach bum.

他从大学退学，整天在海滩闲逛。

After dropping out of college, KITANO knocks on the door of France-za, a striptease theater in Asakusa, and begins his training as a vaudevillian.

这是一齣以北野武，重现其少年时代影片。

They have dropped out of society.

他们已经退出社交圈。