哈單字
彭蒙惠英語 2019/4
come upon (somebody/something)
(phr v)
偶然發現；碰上，邂逅
While hiking in the mountains, Frank came upon a fellow traveler who was injured and in need of rescue.
法蘭克在登山健行時，遇到一名受傷、需要救援的同路旅人。
