Once your puppy catches on, then it's time to redefine a "hard bite" and consider all biting as too hard.

一旦你的小狗渔获物的，那么现在是时候重新定义一个“硬咬”，并考虑所有咬太硬。

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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。

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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。

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This is "Quiet Dog Bite Hard."

VOA: special.2009.07.24

But his group found it hard to bite their tongues over the kidnapped Japanese.

ECONOMIST: Japan and North Korea

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