device to measure the flow of water

例句：

1. 1. The deviceis designed to measure the flow of water.
   这个装置是用来测量水流的。
2. 2. The engineerused a device to fix the leakypipe.
   工程师用了一个装置来修理漏水的管道。
3. 3. The scientist developed a new devicefor detecting cancer cells.
   科学家开发了一种新设备用于检测癌细胞。