略知一二

Explanation: Means a little bit know something 　　Usage: Verb-object type; as predicate; that a little know something 　　Source: Qing Li Ru-zhen, "Flowers in the Mirror" 55 back: "I am Luo House, though not with the capitalists, to a pro-friendship, his family things, but also know a little." Thesaurus:  A little knowledge of non-, an ignorant person, smattering, Vice Shaocai