你看，成年雌鸟在产蛋的过程中会在某些长骨内产生一层海绵状的骨组织。
You see, adult female birds during egg production produce a layer of spongy bone tissue inside certain long bones.
梨状肌是附着在骶骨和大腿骨上的强大的回旋肌，对他们的拉伸有损于骶髂关节的稳定性。
The piriformis muscles, strong external rotators of the thigh, attach to the sacrum and the femur. Stretching them can increase S-I joint instability.
我们看到的獠牙其实不是牙，而是骨状突鄂，仅见于雄鱼，可能用于同性争斗。
The fangs are not teeth, but bony jaw protrusions that are present only in males and are likely used for sparring.
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