Then he handed Samuel the forceps and told him to pull up on the skin between the rear legs to separate it from the muscle.
随后他递给塞缪尔手术钳，告诉他先把后腿之间的皮肤扯起来，使之与肌肉分离。
2
For example, if you accidentally touch a hot stove, the nerves in your skin shoot a message of pain to your brain. The brain then sends a message back telling the muscles in your hand to pull away.
比如你不小心碰到了热火炉，你皮肤中的神经就会向大脑发射疼痛信号，于是大脑就会发回信号让手挪开。
3
Pull the skin up the front of your torso to lengthen it.