The particular design of muscles and bones in the neck and limbs of the turtle allow that it can draw in its exposed parts such that an attacker can find nothing but hard shell to bite.

海龟颈部和四肢的肌肉及骨骼的特殊设计使它能把暴露在外的部分缩回去，这样攻击者只能去咬坚硬的外壳。

youdao

Patient: it has been like this since I tried to bite something hard.

病人：有一次我咬了硬的东西之后发生的。

youdao

But a jaguar's bite is so strong, it can actually crush the hard skull of its prey.

但美洲豹咬起来异常凶猛，有时候它甚至能咬碎猎物的头盖骨。

youdao

This is "Quiet Dog Bite Hard."

VOA: special.2009.07.24

Steve Akers from Unison said this was a question of the council and the community deciding whether they want austerity to "bite this hard".

BBC: Hereford & Worcester

The pandas bite off the hard outer part of the stalks and eat the soft fibres within.

BBC: Play one-on-one with a giant panda

For dessert, the Philippine-inspired, brown-sugar fried Banana Lumpia is a perfect bite into a hard wrap cover to unleash the mushy and very sweet inside.

BBC: Guam: The best place you never considered going to