每个科学家都需要机器松鼠来做一些研究。
The robotic squirrel is needed by every scientist to do some research.
每个科学家都是某个方面的专家，要么是哺乳动物、昆虫、鸟类，要么是植物。
Each scientist had expertise in either mammals, insects, birds, or plants.
美国科学家称，每个办公室都可以使用便携式踏板机来改善员工的健康状况。
Portable pedal machines could be used in every office to improve the health of workers, according to scientists in the US.
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