Svcs
abbr. superior vena cava syndrome 高级腔静脉综合病症
🗣️ 情景例句
It was only a tummy ache.
仅仅是肚子有点痛。
No problem.
没什么好谢的。
The Hubble telescope was launched into space by NASA on April 20,1990 at a cost of over a billion dollars.
哈勃望远镜于1990年4月20日由国家航空航天局发射升空，耗资10多亿美元。