名詞 national flag:

1. an emblem flown as a symbol of nationality
   同義詞：ensign

1. A national flag displayed on ships and aircraft, often with the special insignia of a branch or unit of the armed forces.
   國旗掛于船只或飛機(jī)上的國旗，常帶有部隊(duì)分隊(duì)或部隊(duì)單位的特殊識(shí)別標(biāo)記
2. He ordered a soldier to bring a national flag and covered the boy's body with it, leaving only his face exposed.
   他命令一名士兵拿來一面國旗，把它蓋在男孩身上，只露出他的臉。
3. They ran up their national flag.
   他們升起了國旗。