| 释义 |
DEFINITIVE EXAMPLES 权威例句〔alert〕When you're driving in winter you should always be on the alert for icy conditions.冬天驾车时你应该时刻警惕出现路面结冰的情况。韦氏高阶〔watch〕He maintains a vigilant watch over his property.他时刻警惕地关注着自己的财产。韦氏高阶〔watch〕They kept a vigilant watch for the enemy.他们时刻警惕着敌人。牛津搭配 |