Grammar Note
洋葱是可数名词，复数形式为 onions。
洋葱；洋葱头
先理解核心含义，再看它在真实句子里的用法。
洋葱；洋葱头
the round edible bulb of an onion plant, used as a vegetable
I chopped an onion for the soup.
我为汤切了一个洋葱。
指作为蔬菜食用的鳞茎
一种单子叶植物(葱属),与大蒜近缘,用作蔬菜和调味品。
A monocotyledonous plant (Allium cepa), allied to garlic, used as vegetable and spice.
洋葱的鳞茎
the bulb of an onion plant
这种植物的鳞茎。
The bulb of such a plant.
具有中空叶子的球茎植物,全球种植,其圆形鳞茎可食
bulbous plant having hollow leaves cultivated worldwide for its rounded edible bulb
The recipe calls for two onions and a clove of garlic.
这个食谱需要两个洋葱和一瓣大蒜。
She cried while peeling the onion.
她剥洋葱时流泪了。
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洋葱是可数名词，复数形式为 onions。
该词属于 Oxford 核心词汇，值得优先掌握常见搭配和句型。
Collins 词频等级为 2，建议结合例句记忆，而不是只背中文释义。
Dictionary facts from AI_FALLBACK, ECDICT, WIKTIONARY.