skim gate

例句：

1. 1. The engineer designeda skim gate to prevent water fromflowing through the pipeline.
   工程师设计了一个筛网来防止水流过管道。
2. 2. The farmer useda sieve to separate the grainsfrom the husks.
   农民使用筛子将谷物与壳分离。
3. 3. The scientist testedthe mesh of the filter to ensure itwas effective in trapping pollutants.
   科学家测试了过滤器的网眼以确保它能有效地捕捉污染物。