supplement to

• 对 ... 的补充

supplement to的用法和样例：

例句

1. The money I get from teaching the piano is a useful supplement to my ordinary income.
   我教钢琴挣的钱是一笔很管用的外快。
2. The money I got was a useful supplement to my ordinary income.
   我得到的那笔钱是很管用的外快。