For a student with an A average to quit school two months before graduation is sheer mania.

一个平均成绩为甲等的学生会在毕业前两个月退学，简直是疯了。

▷sheer [ʃɪr]（adj.）

【释义】If people can see through your shirt, it's sheer. This can also mean something steep, like a cliff, or anything extreme, like sheer nerve.

used to emphasize how very great, important, or powerful a quality or feeling is; nothing except

完全的，彻底的

The suggestion is sheer nonsense.这个建议纯粹是胡言乱语。

extremely steep; almost vertical

陡峭的；近乎垂直的

a sheer mountain side陡峭的山坡

Sheer clothing or material is so thin, light, and delicate that you can see through it.

（织物等）极薄的，透明的

sheer nylon tights透明尼龙连裤袜

▷mania ['meɪniə]（n.）

【释义】Mania is an extreme interest, desire, or craze. If you dye your dog's fur to match the colors of your favorite football team, you might be suffering from sportsmania.

a very strong interest in something that fills a person's mind or uses up all their time

狂热；热衷

So why your sudden mania for exercise?你为什么突然热衷于锻炼了？

a state in which someone directs all their attention to one particular thing

痴迷；…狂；…癖

Van Gogh suffered from acute persecution mania.凡‧高患有严重的被害妄想症。

a state of extreme physical and mental activity, often involving a loss of judgment and periods of euphoria

躁狂症

每日N词 | kleptomania-偷窃狂,盗窃癖 | 20170626

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