1·The kitchen was clean as a whistle.
厨房里一尘不染。
—— 《柯林斯英汉双解大词典》
2·She's clean as a whistle.
她象口哨一样亮丽。
3·Here's your room; it's clean as a whistle.
这是你的房间，简直一尘不染。
4·I checked the room for concealed wiring, but it was as clean as a whistle.
我检查房间里有无暗线，但房间里干干净净的什么也没发现。