The length of a sperm whale's tooth is 20 cm.长度的一抹香鲸的牙齿是20厘米.From the body, the sperm whale is smaller than the killer whale.从体形上看, 抹香鲸比虎鲸要小.The sperm whale has about thirty teeth in its lower jaw.在抹香鲸的下颚上大约有30颗牙齿....
把书摆正,使其整齐美观.Square up the books to make them look neat.墙上那幅画挂歪了,我必须把它摆正.That picture on the wall is crooked - I must put It'straight.把画摆正,现在是歪的.Put the picture right -- it's not straight....