happen
v.
c.1300, "to come to pass, occur," originally "occur by hap, to have the (good or bad) fortune (to do, be, etc.);" see hap, n.. Replaced Old English gelimpan, gesceon, and Middle English befall. In Middle English fel it hap meant "it happened." Related: Happened; happening.
〔李〕[happ;-env.] v.（偶然）发生； 恰好，碰巧 ←hap,happ (ON happ)=good luck 好运气