the activity of trying to get things made of metal out of rivers or canals using strong magnets (= objects that can attract iron and steel)

The magnets used in magnet fishing are designed to be extra-strong and are potentially dangerous if misused. 用来进行磁力打捞的磁铁被设计成具有超强的磁力，同时如果使用不当有可能会很危险。

Many people go magnet fishing to clean the waterways. 很多人用磁力打捞的方式清理河道。

a child's game that involves trying to pick up metal objects using a toy like a small fishing rod (= pole and string) with a magnet on the end

The magnet fishing game includes 12 colourful wooden fish with magnets attached. 磁吸钓鱼游戏包含十二条装有磁铁的彩色木头鱼。