onion ring       
noun [ C usually plural ] uk/ˈʌn.jən ˌrɪŋ/ us/ˈʌn.jən ˌrɪŋ/
 (炸)洋葱圈
a circular piece of onion covered in batter (= a mixture of flour and water or milk, and sometimes eggs) or breadcrumbs and fried
  The onion rings were battered and cooked in fresh oil. 洋葱圈裹上面糊后用新鲜的油炸制而成。 
 The combo consists of a selection of fried things like onion rings and spicy wedges.  这个套餐包括一系列油炸食品,比如洋葱圈和辣薯角。 
 - More examples
 - Having a side order of onion rings with your T-bone doesn't make you a vegetarian.
 - Drain fried onion rings on paper towels.
 - This article will tell you how to make homemade onion rings and the dipping sauce for them.