系数环

Any one of various types of wooden - soled footwear,such as a sandal,shoe,or clog,worn to increase one's height or to keep one's feet out of the mud.

木鞋，木屐一种木底套鞋，如凉鞋、鞋、木屐鞋，穿着用来增加高度或使脚免于陷入泥中

The agricualtural and eupatorin manilensis in the spirits, and so on.

农用灭蝗溶剂油等。