That's important, because although they are able to hear chainsaw noises up to a kilometer in the distance, allowing them to cover about three square kilometers, if someone were to take them, it would make the area unprotected.
这点很重要，因为虽然 它们能接收电锯的声音， 最远可以达到1公里， 这样它们就可以覆盖 约3平方公里的区域， 但如果有人把它们取走， 就会导致该区域不在保护范围之内。