然后他们在三趾树懒的基因组中发现了同样的病毒。
They then found the same virus lurking in the genome of the three-toed sloth.
三趾树懒每天要睡9.6小时。
三趾树懒和二趾树懒的区别是它要多一根脚趾。
The three-toed sloth is different from the two-toed sloth in that it has one more finger.
三趾树懒和二趾树懒的区别是它要多一根脚趾。
The three-toed sloth is different from the two-toed sloth in that it has one more finger.
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