The gemstone is 28.6 millimetres high and weighs 139.43 carats.这块宝石高28.6毫米，重139.43克拉。The edge must be machined down to 0.02 millimetres.这边缘必须切割到0.02毫米的精确度.One centimetre is equal to 10 millimetres.一厘米等于10毫米....
The edge must be machined down to 0.02 millimetres.这边缘必须切割到0.02毫米的精确度.I shaved a few millimetres from the bottom of the door to make it close properly.我把这门的底部薄薄地刨去几毫米使它能关严。One centimetre is equal to 10 millimetres.一厘米等于1...