1.work up通过锻炼或高强度工作而产生

Even if you are not prepared to work up a sweat three times a week, any activity is better than none.

即使你不准备1周流3次汗，任何活动总比没有要好DjqvUztxxBan。

2.electric current 电流

Piezoelectric crystals produce an electric current when bent and have many uses — the igniter on a gas barbecue grill being one of them.

压电晶体在发生弯曲时能够产生电流，并且已有很多用途——燃气烧烤的点火器就是其中之一l_tG)V&c+x。

3. proof-of-concept 概念验证

This proof-of-concept implementation demonstrates that you can implement these specifications on resource-constrained devices.

该概念验证的实现说明了您可以在资源受限的设备上实现这些规范+-w7R5cR2(oAh。

4. out of juice 没电了

I don't want to run out of juice and be stranded by the side of the road.

我可不想等车没电了被困在马路边%C)GRDh8SFdA-@52A)-。