petroleum jelly
noun /ˌpetrəˈleɪtəm/
/ˌpetrəˈleɪtəm/
(North American English also petrolatum )
[uncountable]- a soft clear substance obtained from petroleum, used to heal (= make better) injuries on the skin or to make machine parts move together more smoothly
synonym Vaseline™矿脂;凡士林