cav
n. 洞,腔;(牙齿的) 龋洞
Constant Angular Velocity,恒定角速度
calinago cherrywood margaritaceous morphinomaniac phrensy trepan下载迅蛙App
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n. 洞,腔;(牙齿的) 龋洞
Constant Angular Velocity,恒定角速度
calinago cherrywood margaritaceous morphinomaniac phrensy trepan