So, what that means concretely is if you have a force field that conservative, then you cannot build somehow some perpetual motion out of it.

具体来讲，如果你有一个保守力场，就不可能建立起永恒的运动。

youdao

Mechanical energy is conserved, because gravity is a conservative force.

机械能是守恒的，因为重力是守恒力。

youdao

Our main concern so far has been to say if we have a conservative force field it means that the work of a force is the change in the energy.

目前为止，我们主要关心的是，如果在保守力场中，力所做的功是，能量的改变。

youdao

The city is powerless, suggests Mr Atrianfar, to force the conservative-run armed forces and the state broadcaster to pay the millions of dollars of back taxes they owe.

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In other words, Johnson is simply too chill and too happy-go-lucky to win over the Republican Party at a time when the driving force behind conservative politics is fear and anger.

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The force's new Conservative police and crime commissioner, Matthew Ellis, made the announcements at a meeting with the county's police and crime panel.

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