The old cuticle is digested by molting fluid.旧表皮被蜕皮液消化.Molting in insects is triggered by rising levels of a hormone called ecdysone.昆虫的脱皮是由于称为脱皮素激素的含量升高而引起的.Molting is controlled by a hormone.蜕皮是由一种激素....
制造商之间的恶性价格战已将利润削减到了最低。A vicious price war between manufacturers has cut margins to the bone.90%的肿块都不是恶性的。Nine out of ten lumps are not cancerous.检查手术切片，以判断是否为恶性。Tissue that is removed during the operation is checked for ...