Point-source
[医]点源
🧩 词语组成解析
source
[sɔrs]
n. 根源，本源;源头，水源;原因;提供消息的人;
vt. （从…）获得;发起;向…提供消息;寻求（尤指供货）的来源;
vi. 原料来源;起源;寻求来源;寻求生产商（或提供商）;
source(rise)→泉源；源头
🗣️ 情景例句
In about half an hour. Why?
大约半个小时。为什么问这个？
On behalf of all the China National Packaging Import and Export Corporation employees invited tonight.
我代表被邀请的中国包装进出口公司全体员工。
I turned to look at the children, but there weren't any in sight: they had all run away! The man laughed when he realized what had happened.
我转过头去看那些孩子，但一个也不见，全都跑了！当那个人明白了发生的事情时，笑了起来。