🧩 词语组成解析
n. 外祖母, 祖母, 老奶奶
abbr. 天文学高级研究中心（Centre for Advanced Study of Astronomy）；计算机与自动化系统（Computer and Automated System Association）；合作应用卫星A（Cooperative Application Satellite A）
🗣️ 情景例句
African athletes are good at track and field events.
非洲选手擅长田径项目。
Oh, it's a shame that you have to leave.
哦，真遗憾，你非走不可呀。
It was my first flight. I was nervous when the plane took off.
我第一次坐飞机，起飞时我有点紧张。