crazy adj. 疯狂的，狂热的，（指建筑等）不安全的
例句：You must be crazy to ride a bicycle that has no brakes!
你骑一辆没闸的车，一定发疯了吧！

radical adj. 根本的，基本的，激进的 n. 激进分子
例句：I don't belong to the school of thought that favours radical change.
我不属于激进派。

extreme adj. 尽头的，极端的，极度的，偏激的 n. 极端，极端的事物
例句：There is a Chinese restaurant at the extreme end of the street.
在这条街的尽头有一家中国餐馆。

harsh adj. 粗糙的，荒芜的，苛刻的，刺耳的，刺目的
例句：Some modem music sounds harsh and tuneless.
现代音乐中有一些又刺耳又不成调。

hysterical a. 歇斯底里的，异常兴奋的
例句：I tried to calm her down, but Ariel was almost hysterical.
我尽量使她安静下来，但艾莉尔却几乎是歇斯底里。

moderate adj. 中等的，适度的，适中的 v. 缓和
例句：It's wrong to bracket Thomas with the extremists in his party; his views are very moderate．
把托马斯跟他们党内的极端分子等同看待是不对的：他的观点其实很温和。

modest adj. 谦和的，谦让的，适度的
例句：Wesley has got a drawer full of medals but he's too modest to wear them.
卫斯理有满满一抽屉的奖章，但是他很谦虚，从不戴它们。

mild adj. 温和的，温柔的，淡味的，轻微的，适度的
例句：The punishment inflicted on the theft was too mild.
那个小偷受的惩罚太轻。