常見(jiàn)例句用作形容詞 (adj.)Cancer cell walls have a tough protein covering.癌細(xì)胞的細(xì)胞壁有一個(gè)強(qiáng)硬的蛋白質(zhì)膜。The government has introduced some tough new laws on food hygiene.政府對(duì)食物衛(wèi)生出臺(tái)了一些強(qiáng)硬的新法規(guī)。 返回 get-tough