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libratory adj.擺動的,振動的;保持平衡的。

librettist

The scientists say the droplet itself becomes a little libratory that can do things like pump separate and mix 科學說這種小液滴本身象一小型實驗室,在那里可以處理象抽水泵、分離及混合此類的事情。

They discovered how to inactivate or knock out single genes in libratory animals 他們發現如何在實驗動物體內阻止單個基因的活性或敲除單個基因。