常见例句Food fish (Oncorhynchus nerka) of the North Pacific that constitutes almost 20% of the commercial fishery of Pacific salmon. 北太平洋食用魚，學名爲Oncorhynchus nerka。幾乎佔太平洋鮭魚産量的20%25。Nerka virus 納爾卡病毒 返回 nerka