happen (EN)
動詞

動詞 “happen”

happen; he happens; past happened, part. happened; ger. happening
  1. 発生する
    A surprise party happened at my office for the boss's birthday.
  2. 偶然起こる
    I happened to find a $20 bill on the sidewalk this morning.
  3. 偶然出会う
    While hiking, we happened upon an old, abandoned cabin in the woods.