Expectorator
n. 咳痰者，吐痰者
🗣️ 情景例句
Cloning technology is good news for those patients who need organ transplants.
克隆技术对于那些需要器官移植的病人来说是个福音。
Are these books all yours?
这些书全是你的吗？
Don't lose your head.
不要惊慌失措。