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																										- 十减去四得[剩下]六。
 If you take four away from ten, that leaves six/Ten take away four is/leaves six.
- 8减去2是6。
 If you subtract 2 from 8, you get 6.
- 六减去二等于四。
 Six minus two equals four.
- 因为输出等于输入减去损耗,工程师必须使损耗降低到最小。
 Since output equals input minus losses, the engineer must kept the losses to a minimum.
 
 
 
 
 
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