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
Come on, Mar.
得了， Mar。
There's nothing interesting in the newspaper.
报纸上没有什么有趣的新闻。
Fortunately, nothing was found and five hours later we were able to take off again.
幸运的是，什么也没有找到。5个小时后，我们又起飞了。