fall upon英 [fɔːl əˈpɒn]美 [fɔːl əˈpɑːn]【参见】fall on英英释义verbfind unexpectedlythe archeologists chanced upon an old tombshe struck a goldmineThe hikers finally struck the main path to the lakeSynonym:strikecome uponlight uponchance uponcome acrosschance onhappen uponattaindiscover双语例句