beware
/bɪˈweə(r); bɪ`wɛr/ v[I, Ipr]
(used only in the infinitive and imperative 仅用於不定式及祈使句) ~ (of sb/sth) be cautious (of sb/sth); take care (about sb/sth) 谨防（某人[某事物]）; 当心（某人[某事物]）
He told us to beware (of pickpockets, the dog, icy roads). 他告诉我们要当心（小偷、狗、结冰的道路）.
Beware wet paint! 注意--油漆未乾!