exhaust v. 用尽;抽干(ex出+haust→抽干→抽出)
exhausted a. 筋疲力尽的(exhaust+ed→[力气]被抽干了)
exhaustive a. 彻底的,穷尽的(exhaust+ive→用尽了全部方法→彻底的)
inhaust v. 吸,饮(in进入+haust)