Knock knock a button, good and cheap goods go out thousands of miles in the factory are well aware, we do not want to think of the previous things.

敲一敲按钮，物美价廉的商品鱼贯而出，千里之外的工厂了如指掌，我们做到了以前想也不敢想的事。

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Moreover, it regulates gene knock-out spatially and temporally. Conditional gene knock-out has become an important means to research gene function in vertebrates.

并且对基因敲除进行时空的调控，并成为脊椎动物成体中研究基因功能的重要手段。

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League position and form goes out of the window when you play in a knock-out competition and that is something we are well aware of.

BBC: Clive Stuart-Smith column

But a shoulder injury kept him out of the autumn series and a thigh knock in training last week forced him out of the Wales game.

BBC: Prop Dan Cole delighted by starting place for England

Fulham have won plaudits this season for their performances in the Europa League, which has seen them claim impressive results against Basle and Roma and knock out holders Shakhtar Donetsk in the last 32.

BBC: Dickson Etuhu