吃透英语课本，提升在校竞争力
v. 扭伤
n. 扭伤
现在分词：spraining
第三人称单数：sprains
过去式：sprained
过去分词：sprained
复数：sprains
I fell down the steps and sprained my ankle .
我从台阶上摔下来，扭伤了脚踝。
Rubin suffered a right ankle sprain when she rolled over on her ankle.
鲁宾摔倒时身体压到了脚踝上导致右脚踝扭伤。
vt.[外科]扭伤
twist
rick
n.[外科]扭伤
strain
stremma
