And this is crucial because if you are to be holding something like a large spanner, or something like a chair...a steel chair, it could literally kill someone if it were standing in its way.

这很重要，因为如果你拿着什么东西，比如一把测距扳手，或者一把铁制椅子，就有可能真的杀了站在你和磁铁之间的人。