They are scavengers, which feed on dung and other decaying organic matter, and play an invaluable role in keeping the veld clean.
They are scavengers, which feed on dung and other decaying organic matter, and play an invaluable role in keeping the veld clean.
他们是清洁工，以粪和另外的腐烂有机物为食，而且在保持草原清洁方面扮演了一个举足轻重的角色。