试验表明，人类可能拥有能够感知地球磁场的先天感应力，而动物的这一感应力在很久以前就被证实了。
Experiments indicate that humans may also be born with the ability to perceive the earth's magenetic field while the same has been proven true for animals long time back.
Experiments show that humans may be born with the ability to perceive the earth's magenetic field while animals have long been proven to possess that same ability.
