翻译the citizens were warned to be on guard against a sudden n

用in a way,pass on,guard against造句． 同义句:He warned his son against going to the party.He warned h to be taken off guard怎么翻译? they were walking on the street when all of a sudden they sa I am willing to be a knight,to serve you,to guard yo翻译一下中文 Passengers are warned to be ____against pickpockets on buses Policemen were keeping guard outside the building.翻译 the doctor warned the patient ____ smoking A of B against C 请翻译下这句话I want you to be on your guard and watch your step fr All of a sudden,we were caught in the rain He was almost hurt when the bus came to a sudden stop.be hur The ladder might be lying on the ground instead of against a