Lesshaft's triangle
[医] 勒斯哈夫特氏三角(腰上三角)
🧩 词语组成解析
🗣️ 情景例句
you've made a very strong impression
你已经留下了非常深刻的印象
I still have to fill 16 hours in my major.
我必须重修主修科目16小时。
Good afternoon, class! Who's on duty today?
同学们，下午好！今天谁值日？