Cannulas
套管, 插管
🗣️ 情景例句
2. We should all start exercising.
咱们都该去健身了。
Could you do me a favor?
能请你帮个忙吗？
Sorry! It's not a very good line. Could you speak more clearly, please?
对不起！电话线路不太好。你能说清楚一些吗？