Technicians carefully picked strong horses and used them as breeding stock. 技術(shù)員精心挑選出強壯的馬匹做原種。
No one supposes that our choicest productions have been produced by a single variation from the aboriginal stock. 沒(méi)有人設想我們精選的產(chǎn)物，是從它們的原種僅經(jīng)一次變異而產(chǎn)生的。
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電信業(yè)務(wù)許可證編號：滬B2-20190700
