Jcaa
abbr. Japanese Civil Aviation Authority 日本民用航空局
🗣️ 情景例句
Many business people turn off their pagers and cell phones during their leisure time.
许多商人在他们的休息时间里都把传呼机和移动电话关掉。
How wide is this bridge?
这座桥有多宽？
It is the one world in the Solar System that is most like the Earth.
火星是太阳系里与地球最接近的一颗行星。