squeaky-clean
adjective informal uk/ˌskwiː.kiˈkliːn/ us/ˌskwiː.kiˈkliːn/
干干净净的，一尘不染的
completely clean
I love the squeaky-clean feel of my hair after I've washed it. 我喜欢洗完头发后干干净净的感觉。
品行完美无瑕的，道德高尚的
Someone who is squeaky-clean is completely good and honest and never does anything bad
Journalists have been trying to discover if the senator really is as squeaky-clean as he claims to be. 记者们一直想弄清楚参议员是否真像他自己所说的那样光明磊落。