unit of measurement

例句：

1. 1. The engineer useda ruler to measure the length of thewall.
   工程师用尺子测量了墙的长度。
2. 2. The scientist conducted experiments to determine theaccuracy of the new measurement unit.
   科学家进行了实验，以确定新测量单位的准确度。
3. 3. The construction company is using a newunit of measurement for their project.
   建筑公司正在使用一种新的测量单位来管理他们的项目。