一个姓贝尔的人可能像熊一样凶猛。
如果一个妈妈面对使她孩子致命的威胁，她会像一只熊一样愤怒搏斗。
If a mom faces deadly threats on her child, she will fight angrily like a bear.
和棕熊和北极熊一样，树懒熊可能是在树木稀少的环境中进化而来的。
Like brown bears and polar bears, sloth bears may have evolved in an environment with few trees.
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