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....
They had every qualification for success.他们具备获得成功的各种条件.The ability to impart knowledge and command respect is the essential qualification for teachers.具备传授知识并赢得尊敬的能力是对教师的基本要求。A degree is by no means an essential qualific...