Devoicing
v. 使清音化；濁音清化（devoice的ing形式）
??? 情景例句
That's very nice of you, but I really can't.
你太客氣了，可我真的非走不可。
Why are you following me?
你為什么跟著我？
She had lived in the flat for thirty years and was a veritable magpie at hoarding;
老婦人在這套公寓里住了30年，她又是個名副其實的收藏家。