precaution和prevent的区别是什么
precaution和prevent的区别是 precaution释义: n. 预防,警惕;预防措施 vt. 警惕;预先警告 例句: Each door is coated with fireproof coating as a precaution against fire. 为了预防火灾,每扇门都涂上了防火涂料。 prevent释义: vt. 预防,防止;阻止 vi. 妨碍,阻止 例句: The children are prevented from touching the sharp...