/ɔɪl ||; ɔɪl/noun[U] 1 a thick dark liquid that comes from under the ground and is used as a fuel or to make machines work smoothly 石油；燃油；润滑油
2 a thick liquid that comes from animals or plants and is used in cooking （动物或植物的）油（用于烹饪）:
cooking/vegetable/sunflower/olive oil 食用油；植物油；葵花籽油；橄榄油
oil verb [T]