原文解釋: fear of doing something; cowardice at the moment of action
1. The bridegroom got cold feet on the day of the wedding.
2. Sally said I should try diving, but I had cold feet.
3. Suddenly I had cold feet and couldn’t sing a note.
4. a. Are we still going skydiving this weekend?
b. Sorry, I'm having cold feet about doing that!
5. a. Were you able to ask a lot of question in class?
b. I got cold feet when I saw there were more than 100 students in my class.