Unicast
[计] 单一传播
🗣️ 情景例句
that I wasn't sure.
我说我不能确定。
While the grass grows the horse (or steed) starves.
远水救不了近火。
The key to a solution of that problem lay in an everyday observation.
可以从我们的日常生活观察中找到这个问题的答案。