短語(yǔ)詞組短語(yǔ)be alert to something 能夠覺(jué)察的Be alert to safety 工作中注意安全Be alert to sth 對(duì)Be Alert to Product Placement 警惕產(chǎn)品內(nèi)置To Be Highly Alert 值得高度警惕to be alert for 警戒to be alert against 防范Enable me to be alert 使我是這般警覺(jué) 返回 be alert to