Anarrhea
[医] 逆[行上]流
🗣️ 情景例句
do I really have to
我是不是真的有必要
Her job is beginning to get her down.
她开始对工作感到厌倦了。
it must be known to any kind of radio astronomer in the universe.
这个频率是宇宙中任何射电天文学家都应该熟悉的。