To empty by drawing off the contents; drain.

抽空。

To weaken; wear out by exertion.

使精疲力竭；使疲劳。

To discuss or treat thoroughly.

彻底讨论。

To use up entirely.

用尽。

That which is drawn off, as steam form an engine.

废气(如机器排出之气)。

Pipe or part through which the gas is ejected.

【机】废气口；排气口；排气管。

Ventilating fan.

通风机。

Escape of spent steam or gas from an engine.

【机】排出；排气。