decimillimetre

例句：

1. 1.The ruler is one decimeter long.
   尺子有一米长。
2. 2. The width of the room is about ten decimeters.
   房间的宽度大约是十毫米。
3. 3. The distance between two points on a map is usually measured in decimeters.
   地图上两点之间的距离通常以分米为单位测量。