as slick as a whistle

• 干干净净,身体非常好

as slick as a whistle的用法和样例：

例句

1. The girl kept her house as clean as a new pin.
   这个姑娘把屋子收拾得干干净净。
2. I suggest we make a clean break.
   提议我们干干净净分手吧。