sloth
英 美
sloth does not set in until after gluttony and avarice.
懒惰是在暴食和贪婪之后才开始的。
They then found the same virus lurking in the genome of the three-toed sloth.
然后他们在三趾树懒的基因组中发现了同样的病毒。
Like brown bears and polar bears, sloth bears may have evolved in an environment with few trees.
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。
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