Cannulas
套管, 插管
🗣️ 情景例句
It is important to speak directly and clearly about your subject.
直接了当且明白清楚地说明自己的目的是很重要的。
I ran all the way to school, otherwise I'd have been late.
我一路跑到学校，不然就迟到了。
Where do you think you are? On a race track?
你认为你现在是在哪儿？在赛车道上吗？