其它几种食蚁兽这样的动物，如穿山甲、土豚、针鼹等，以蚂蚁为食。

Any of several other animals, including the echidna, aardvark, and pangolin, that feed on ants.

这个理论对两栖的鸭嘴兽来说有些道理，然而针鼹却是完全陆生的动物。

The theory seems plausible for platypuses, which are amphibious creatures. Echidnas, however, dwell solely on land.

什么科学已经了解到，在过去200年针鼹和为什么仍有很大的差距此处报告。

What science has learned about the echidna in the past 200 years and why there are still large gaps is reported here.