red flag

• n. 红旗；危险信号；(喻)惹人生气的事物

英英释义

Noun:

1. a flag that serves as a warning signal;

   "we didn't swim at the beach because the red flag was up"
   

2. the emblem of socialist revolution

3. something that irritates or demands immediate action;

   "doing that is like waving a red flag in front of a bull"
   

例句

用作名词 (n.)

1. A red flag slowly went up the pole.
   一面红旗徐徐升起。
2. Let's book him in at the Red Flag Hotel.
   我们替他在红旗旅馆订个房间吧。
3. A red lamp is used as a danger signal.
   红灯用作危险信号。
4. If I were advising him, I would say that the elation of his party's progressive wing is a red flag.
   如果让我给他提建议，我会说，民主党中进步派的洋洋得意是一个危险信号。

词汇搭配

• red flag 红旗