on guard against
导读：on guard against读音音标
on guard against意思解释
双语例句用作形容词(adj.)The dog kept a vigilant guard over the house.这只狗警惕地守护着这所房屋。We must be
on guard against意思解释
双语例句用作形容词(adj.)The dog kept a vigilant guard over the house.这只狗警惕地守护着这所房屋。We must be
on guard against读音音标
on guard against意思解释
双语例句
用作形容词(adj.)The dog kept a vigilant guard over the house.这只狗警惕地守护着这所房屋。We must be on guard against hidden enemies.我们必须警惕暗藏的敌人。
