lead pool

例句：

1. 1. The lead pool is filled with water, and the fish swim in it.
   铅池里装满了水，鱼儿在里面游。
2. 2. The lead pool was used to store the old batteries.
   铅池用来储存旧电池。
3. 3. The lead pool was cleaned out, and the workers were happy to see the difference.
   铅池被清理干净了，工人们很高兴看到变化。