both have three sounds they both start with  k and they both end with f the difference  

都有三個音，都以k開頭，都以f結尾。

is the vowel in cuff I have a very relaxed  mouth and that short uh cuff cuff cuff for cough  

是袖口的元音，我的嘴很放鬆，短的呃，袖口的袖口，是咳嗽的袖口。

my mouth is open wide like you're coughing open  in a wide oval shape tip of the time is low  

我的嘴張得很大，就像你在咳嗽一樣，張成一個寬大的橢圓形，時間尖端很低

back of the tongue is pulled high up cough cough  cough cuff cough cuff cough cuff cough cuff  

舌背被高高拉起 咳嗽 咳嗽 袖口 咳嗽 袖口 咳嗽 袖口 咳嗽 袖口

cough cough cough i try to cough into the  cuff of my shirt to be polite give it a try

咳咳咳，我試著對著我的襯衫袖口咳嗽，以示禮貌，試試吧。