happen upon英 [ˈhæpən əˈpɒn]美 [ˈhæpən əˈpɑːn]巧遇,偶然发现英英释义verbfind unexpectedlythe archeologists chanced upon an old tombshe struck a goldmineThe hikers finally struck the main path to the lakeSynonym:fall uponstrikecome uponlight uponchance uponcome acrosschance onattaindiscover双语例句