Definition: a unit of length which is equal to 0.001 metres Level: B1
这枚戒指的宽度是三毫米。
The ring has a width of three ___millimetres.
一个标准回形针大约厚一毫米。
A standard paper clip is about one ___millimetre thick.
这个精密工具可以测量到十分之一毫米以内。
The precision tool can measure to within a tenth of a ___millimetre.
