常見例句And in Ontario, Canada, wolves have depended on beavers when ungulates were scarce.在加拿大的安大略省，當有蹄類動物的數(shù)量減少的時候，狼靠海貍為生。Hoof, for thickening of the claws, especially ungulates developed, and continued proliferation, to compensate for wear parts.蹄，為增厚的爪，有蹄類特別發(fā)達，并可不斷增生，以補償磨損部分。 返回 ungulates