Biologists have long suspected that mechanical forces may help shape development.

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。

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Human and mechanical technologies to help us were at a premium17.

能够给我们以帮助的人和机械技术十分稀少。

youdao

Human and mechanical technologies to help us were at a premium17.

能够给我们以帮助的人和机械技术十分稀少。

youdao