bottom /ˈbɔtəm/ n. ［c］1.底，底部：from top to bottom从上到下，全部地 from the bottom of one’s heart 从心底，由衷地：I thank you from the bottom of my heart for all your help. 我从心底里感谢你们的帮助。There are some tea-leaves in the bottom of the cap. 杯子底有一些茶叶。We were glad to reach the bottom of the mountain.我们很高兴到达了山脚下。2.尽头，尾部，不重要部分：I’ll walk with you to the bottom of the road. 我要和你一块走到路的尽头。He is always at the bottom of the class. 他在班上总是居末流。3.海底，湖底，河床：They sent the enemy’s ship to the bottom of the sea.他们把敌船击沉到海底。
bottomless /ˈbɔtəmlis/ adj. 1.无底的，深不可测的：A beggar’s purse is bottomless.乞丐的口袋没有底。2. 用于短语 a bottomless pit 无尽的事物；无休止的状况；无底洞：the bottomless pit of his sorrow他无尽的悲哀 There isn’t a bottomless pit of money for public spending.并非有用之不尽的钱用于公共开支。
