three-phase squirrel-cage two-pole asynchronous motor 三相二极鼠笼型异步电动机
Two squirrel monkeys that were colour-blind from birth have had their vision restored after receiving gene therapy.
通过接受基因疗法，两只天生色盲的松鼠猴现在已经能辨别颜色了。
On first sight, the two types of squirrel are similar.
乍一看，这两种松鼠很相似。
Caloric-restriction projects underway in two species more closely related to humans—rhesus and squirrel monkeys—have made scientists optimistic that CR mimetics could help people.
对与人类联系更密切的两个物种——猕猴和松鼠猴——进行热量限制的项目，使科学家对模拟热量限制可以帮助人类抱有乐观的态度。
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