line filter

例句：

1. 1.The line filter is used to remove impurities from the water.
   线过滤器用于从水中去除杂质。
2. 2. The engineer designed a line filter that could effectively catch bacteria.
   工程师设计了一个线过滤器，可以有效地捕捉细菌。
3. 3.During the testing process, the line filter was used to ensure the quality of the product.
   在测试过程中，线过滤器被用来确保产品的质量。