你只需要将它除以1000三次即

You just need to divide it thrice by 1000 i.e.

var volume = volumeInMillimeters / (1000 * 1000 * 1000 );

这是因为卷有3个维度。如果你将每个维度乘以1000，那么要在 mm 中得到它，你需要有效地将每个维度除以1000，或者将最终结果除以（1000 * 1000） * 1000）。

This is because volume has 3 dimensions. If you have multiplied each dimension with 1000, then to get it in mm back, you need to effectively divide each dimension by 1000, or divide the final result by ( 1000 * 1000 * 1000 ).