Back knee
[医] 膝反屈, 翻膝
🧩 词语组成解析
back
[bæk]
n. 背，背部;背面，反面;后面，后部;（椅子等的）靠背;
vt. 使后退;支持;加背书于;下赌注于;
vi. 后退;倒退;
adj. 背部的;后面的;以前的;拖欠的;
adv. 以前;向后地;
knee
[ni]
n. 膝;膝盖;
vt. 用膝盖碰;
🗣️ 情景例句
She exchanged a few words with the foreigner.
她和那个外国人交谈了几句。
Those who climb high often have a fall.
爬得高往往跌得重。
They work all day.
他们整天营业。