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....
The golden eagle is now on the endangered species list.金雕已被例入濒危物种.A good surgeon must have an eagle's eye, a lion's heart, and a lady's hand.出色的外科医生必须心明眼亮和有一双灵巧的手。There's a picture of the bald eagle o...
Instead of silver nitrite mercuric nitrite may be used.可以用亚硝酸汞来代替亚硝酸银.Mercury fulminate may contain trace of mercuric oxalate.雷汞中可能含有微量的乙二酸汞.Patch testing showed that the patient was sensitive to ammoniated mercury , mer...