你需要但你不要我时，我必会留低；你想要但不需要我时，我应该离开。

When you need me but do not want me, then I must stay. When you want me but no longer need me, then I have to go.

youdao

你需要但你不要我时，我必会留低；你想要但不需要我时，我应该离开。

When you need me but do not want me, then I must stay. When you want me but no longer need me, then I have to go.

youdao