那两条狗突然互相撕咬了起来。
他知道一旦上了山，他就很容易被追上，狼的牙齿会撕咬他的肉。
He knew that once he hit the hill, he’d be easy caught up and the wolf’s teeth would be tearing into his flesh.
一些群体会通过用指关节敲树枝的方式来互相博取关注，而另一些群体则是以大声撕咬叶子来吸引注意力。
Some groups would get each other's attention by rapping branches with their knuckles, while others did it by loudly ripping leaves with their teeth.
需要石油的国家正在互相撕咬以锁定稀缺的石油供应，并且，无论这种事会多么令人不愉快，它们都愿意与任何政府打交道。
Countries that need oil are clawing at each other to lock up scarce supplies, and are willing to deal with any government, no matter how unpleasant, to do it.
比如说，像小鹿或者山羊这种被捕食的种群，它们的代表动作就是突然快速逃跑的动作和突然转弯；相反的，猫科动物之类的捕食种群会练习潜行追踪、猛扑和撕咬等动作。
Prey species, like young deer or goats, for example, typically play by performing sudden flight movements and turns, whereas predator species, such as cats, practice stalking, pouncing, and biting.
比如说，像小鹿或者山羊这种被捕食的种群，它们的代表动作就是突然快速逃跑的动作和突然转弯；相反的，猫科动物之类的捕食种群会练习潜行追踪、猛扑和撕咬等动作。
Prey species, like young deer or goats, for example, typically play by performing sudden flight movements and turns, whereas predator species, such as cats, practice stalking, pouncing, and biting.
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