数字增减的译法

1.句式特征：by＋名词＋比较级＋than

The wire is by three inches longer than that one.

这根导线比那根长3英寸

2.句式特征：表示增减意义的动词＋to+n.译为：增加到……或减少到……

Metal cutting machines have been decreased to 50.

金属切割机已经减少到50台。