1/happen的釋義:
vi. 發生碰巧偶然遇到
2/happen的用法例句:
You can never guess what will happen in the future.
你永遠猜不到將來會發生什麼事。
3/happen的詞組有:
happen to be碰巧是恰巧是
as it happens碰巧偶然發生
happen on偶然遇到或發現