For penny-pinchers, the line between thrift and thievery turns out to be as tangled as a yard-sale yo-yo.

对吝啬鬼来说，节俭和偷窃之间的界线竟如同旧货市场上的溜溜球般纠结杂乱。

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Theinstrument is designed based on electromagnetic theory and principle of equilibrium in mechanics and composed of a timer, a current regulator and meter, control circuits and two-arm pinchers.

该仪器是根据电磁理论和力学平衡原理设计的，由定时器、电流调节器和电流表、控制电路及电磁夹具所组成。

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Theinstrument is designed based on electromagnetic theory and principle of equilibrium in mechanics and composed of a timer, a current regulator and meter, control circuits and two-arm pinchers.

该仪器是根据电磁理论和力学平衡原理设计的，由定时器、电流调节器和电流表、控制电路及电磁夹具所组成。

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