Laughter may even have evolved long before primates. 笑甚至可能在靈長(cháng)類(lèi)出現很久以前就已經(jīng)演化形成。
Chinchilla is a kind of lemur about the size of a squirrel with a long round of the primates with big eyes. 灰鼠狐猴是一種大小跟松鼠差不多，長(cháng)著(zhù)圓圓大眼睛的靈長(cháng)類(lèi)動(dòng)物。
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