a round vegetable with many layers inside each other and a brown, red or white skin. Onions have a strong smell and flavour.
- 一种圆形的蔬菜（a round vegetable）
- 有许多层在里面（with many layers inside each other）
- 有棕色、红色或白色的皮（and a brown, red or white skin）
- 洋葱有强烈的气味和味道（ Onions have a strong smell and flavour.）
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