n. unstratified soil deposited by a glacier; consists of sand and clay and gravel and boulders mixed together
v. work land as by ploughing, harrowing, and manuring, in order to make it ready for cultivation
prep. 直到, 在...以前, 迄
conj. 直到...为止
vt. 耕种
n. 放钱的抽屉, 备用现金, 冰碛