Now, in general, the produce of antibiotic is firstly extracted by clarification and solvent, and is separated from fermentation liquid and at last do the vacuum evaporation of the liquid extraction.

现代抗生素的生产一般首先是通过澄清和溶剂萃取从发酵液中加以分离，在对萃取液进行真空蒸发制得。

youdao

The Ethiopians say they are keen to go but do not want to leave a security vacuum.

埃塞俄比亚人表示他们乐于离开但不想留下一个安全真空。

youdao

But experience has taught the physicists never to open a window because, when they do, all the air rushes out and leaves the room a vacuum.

但是经验告诉物理学家们不可以打开任何一扇窗子，不然空气就会冲出去，使房间变成真空。

youdao

He says the point of his rearguard action is not to defend the hereditaries but to ensure that the reformed house is at least as independent as the present one, and that the government does not use its newly announced royal commission as an excuse to abolish the hereditaries and then do nothing to fill the vacuum.

ECONOMIST: Robert Cranborne��s Maxim gun

Whether he can meet even that deadline depends partly on what outsiders do to fill the vacuum left by the withdrawal of the Italian-led multinational force.

ECONOMIST: Albania

Instead, the report does nothing to fill the policy vacuum that is being filled by an argument over what to do about the decade-old Bush tax cuts.

FORBES: Tax Reform Report A Letdown For Actual Reform