🧩 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
let you and I talk about it.
我们就来讨论一下。
From which station does the train leave?
这列火车从哪个站开出呢？
or through hiring it, the total expense can be far less than the cost of hotels.
总费用算起来要比住旅馆开支少得多。