交集 jiāojí HSK7 common ground Origin Definitions Defs Strokes Stroke Words Sentences Sents Showing: All meanings (2) All meanings 2 jiāojí 2 common ground 1intersection 1 2 sentences 这两个集合的交集为空集。 zhè liǎng gè jíhé de jiāojí wéi kōngjí. The intersection of these two sets is an empty set. Source: Dong Chinese Dictionary他们两人的生活圈子完全没有交集。 tāmen liǎng rén de shēnghuó quānzi wánquán méiyǒu jiāojí. The social circles of the two of them do not overlap at all. Source: Dong Chinese Dictionary