| Front | invalid, crisp, fragile, brittle, frail |
|---|---|
| Back | 这组词都有“弱”的意思，其区别是：invalid: a.不正确的，缺乏证据的；无效的，作废的。作名词时，表示病弱者，伤残者，久病者。Your ideas about the first humans are interesting but invalid.你关于最早的人类的观点很有意思，但是缺乏证据。A bad car accident made him an invalid.一次严重的车祸使他变成了残疾。crisp: a.指食品的松脆；清新的，爽快的；活跃的，有生气的，干净利落的。crisp biscuit松脆的饼干The student gave a clear, crisp answer to the teacher's question.学生干净利落地回答了老师的问题。fragile: a.常常修饰使用时必须小心才不会破碎的东西，也引申为体弱的，虚弱的。He 's feeling a bit fragile after last night's party.他参加了昨晚的聚会以后，现在感觉有些虚弱。brittle: a.易碎的，易损坏的，通常是指坚硬的东西。The bones of elderly people become brittle and easily broken.老年人的骨头变得脆弱，很容易骨折。frail: a. (指人)体弱的，虚弱的，也可以指东西易碎的。His mother has grown old and frail.他母亲已经年老体弱。 |
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