cull sizer

例句：

1. 1. The farmer used a cull sizer to remove the weeds from his crops.
   农民使用一个筛选器来从他的庄稼中去除杂草。
2. 2. The scientist used a cull sizer to test the samples for contamination.
   科学家使用一个筛选器来测试样本是否受到污染。
3. 3. The engineer used a cull sizer to identify the weakest links in the system.
   工程师使用一个筛选器来识别系统中最薄弱的环节。