n.真空;空白;空虚;清洁;
v.用真空吸尘器清扫;
例句:
His presence should fill the power vacuum which has been developing over the past few days.
他的出现将填补过去这几天形成的权力真空。
Moral values cannot be taught in a vacuum.
道德价值观的教育不能脱离实际。
The spinning turbine creates a vacuum.
旋转的涡轮形成了一块真空区域。