洋葱英语复数是onions。onions的例句：From the rafters of the thatched roofs hung strings of dried onions and garlic（茅草屋顶的椽子上挂着几串干洋葱和蒜）。

onions的例句：The onions market is not the only example（洋葱市场并不是唯一的例子）；If you leave onions long enough they will generally sprout（洋葱放置久了往往会发芽）。