wet-edge agent

例句：

1. 1. The wet-edge agent is used to prevent the growth of mold and mildew.
   湿边剂用于防止霉菌和霉斑的生长。
2. 2. The wet-edge agent was tested on a variety of materials before being approved for use.
   湿边剂在被批准使用前，先对多种材料进行了测试。
3. 3. The wet-edge agent is applied directly to the surface where it is needed.
   湿边剂直接应用于需要的地方。