一直以来生物学家都在怀疑，机械效力可以帮助生物形态的发育。
Biologists have long suspected that mechanical forces may help shape development.
生物型单位通常就是非机械的。
生物实验机械而又枯燥，当时的皮特天天待在实验室里，拿着一个小器皿培养微生物。
Everyday he took a little dish and grew very small living creatures in the lab.
生物实验机械而又枯燥，当时的皮特天天待在实验室里，拿着一个小器皿培养微生物。
Everyday he took a little dish and grew very small living creatures in the lab.
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