同根派生 plain clothes man相关词英汉例句A policeman in plain clothes shadowed the criminal all day.有個便衣警察整天秘密監眡那個罪犯。Suddenly, many plain policemen emerged and those robbers started to flee.突然間很多便衣警察出現了,這些強盜開始逃跑了。plain clothes man更多例句