如果说某人 fly the flag 那么就表示摇旗呐喊，支持自己的国家（或团体）尤其是在国外。
- I’ll be flying the flag for the company when I speak at that big conference in India next week.
- Lang Lang flies the flag for China when he plays on the international stage.
值得注意的是，注意另一个单词 flagging 表示体力或能量的衰减，没力气了。
- By the 40th kilometre the marathon runner was really flagging. It looked like she wouldn’t complete the race.
