| 单词 | 没效 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔CURE〕I tried some herbal remedies such as drinking camomile tea, but none of them worked. 我试了一些草药方子如甘菊茶等，可都没效果。朗文写作活用〔carved/etched/set/written in stone〕These new rules are not carved in stone; if they don't work, we'll change them.这些新规定不是永久的；如果没效果，我们就进行更改。韦氏高阶 |
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