What was once another one of the wild social canids, the grey wolf, has been altered radically, to the point that it has become its own unique animal.

还曾有一种群居性的野生犬科动物——灰狼，已经发生了急剧的变化并形成另一种独特的动物。

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He had a terrible temper, and once threatened to kill another child.

他脾气暴躁，曾经威胁要杀死另一个孩子。

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He had a terrible temper, and once threaten to kill another child.

他脾气暴躁，曾经威胁要杀死另一个孩子。

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He may target one or two individuals, or start playing team members against once another.

FORBES: Magazine Article

Yesterday I was able to announce a meeting, and then once another one had been scheduled was able to follow up with another announcement.

WHITEHOUSE: Press Briefing

One brook trout erupted from the outlet pipe of a lobby fountain in a newly built Greenwich Village apartment house, which straddles the site of what was once another productive stream Minetta Brook.

FORBES: Brookies Under Broadway