人体主要是由骨骼、肌肉和脂肪构成。The body is made up primarily of bone, muscle, and fat.游泳有助于改善骨质疏松和骨骼脆弱。Swimming is helpful for bones that are porous and weak.人的骨骼由206块骨头组成。The human skeleton consists of 206 bones....
Randall would just now be getting the Sunday paper.兰德尔这个时候应该正在拿周日的报纸。I had high hopes that Derek Randall might play an important part.我对德里克·兰德尔发挥重要作用寄予厚望。Randall's illness was only bad luck.兰德尔生病纯粹是时运不济。...