Ectotrachea
气管外层
🗣️ 情景例句
I can see what needs to be done and do it.
我能了解该做什么并切实去做。
Nothing is impossible (or difficult) to the man who will try.
天下无难事，只怕不努力。
Our order specified no substitutions.
我们订单上特别裁明了“拒收替代品”。