保留小数位数英文

3 digits after the decimal point 如果说小数点后保留几位的保留用retain/hold

小数点后保留二位 Decimal Places are two.即可此计划书中表示重量的数据，保留至小数点后二位The decimal places for the weight data in the assignment are two.

hold two places of decimals

呵呵~~用"Round to the nearest hundredth"保留1位小数就是Round to the nearest tenth绝对正确~加拿大的老师们都是这么说的~

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