(US also 美亦作petrolatum /ˌpetrəˈleɪtəm ||; ˌpɛtrəˈletəm/) noun [U] a soft clear substance obtained from petroleum, used to heal injuries on the skin or to make machine parts move together more smoothly 矿脂，石油冻﹙用于伤口或润滑机器部件﹚
petting zooˈpetting zoo
noun [C] (US 美) a park containing many kinds of animals that children can touch ﹙儿童可抚摸动物的﹚动物园