vi.排水；流干；vt.喝光，喝干；使（精力、金钱等）耗尽；使流出；排掉水n.排水；下水道；排水系统；[医]引流 变形： 复数：drains过去式：drained过去分词：drained现在分词：draining第三人称单数：drains 双语释义：v.(动词)vt. & vi. (使)逐渐变干,(使)逐渐流干 (cause to) become gradually dry, as water or other liquid is removed; (cause to) flow off graduall