Jefferson's sloth, Megalonyx, weighed about a ton, and that was small compared to megatherium, which could reach six metric tons, as much as an elephant.
杰斐逊收到的树懒是巨爪地懒，大约有一吨重。但还比不上大地懒，大地懒可重达六吨， 和一头大象一样重。
Megalonyx
原声例句
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中文百科
巨爪地懒
巨爪地懒（学名：Megalonyx）是中新世晚期至更新世晚期一属已灭绝的大地懒。牠们的近亲的二趾树懒。牠们是北美洲的特有种，是二趾树懒科下分布最广的，最北至阿拉斯加及育空。牠们是由游地懒演化而来，其下最早出现的物种是M. wheatleyi。
英语百科
Megalonyx 巨爪地懒
Megalonyx (Greek, "large claw") is an extinct genus of ground sloths of the family Megalonychidae endemic to North America from the Hemphillian of the Late Miocene through to the Rancholabrean of the Pleistocene, living from ~10.3 Mya—11,000 years ago, existing for approximately 10.289 million years. Type species, M. jeffersonii, measured about 3 m (9.8 ft) and weighted up to 1000 kilograms.
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