Lower respiratory tract
下呼吸道
🧩 词语组成解析
lower
['ləuə]
adj. 下方的;在底部的;较低级的;
v. 降低;减少;缩小;
respiratory
['respərə'tɔri:]
adj. 呼吸的;
tract
[trækt]
n. 大片土地;（神经纤维的）束;小册子;<古>一段时间，长时间;
🗣️ 情景例句
Would you mind telling me...
你能告诉我...
How often did I tell you to keep quiet?
我告诉你多少次要安静?
They must keep their hands behind their backs.
他们得一直将手放在背后。