He got very hot under the collar when I asked him where he'd been all day.
我问他一整天到哪里去了，他很尴尬。
《牛津词典》
2
"If I wore a white shirt to school, by the end of the day it would be brown, " recalls He, who was born in 1974, "and there would be a ring of black soot under the collar."
他回忆说：“如果我穿一件白衬衫去上学，一天下来衬衫就变成了棕褐色。 领子下面还有一圈黑黑的烟灰。”
3
He only owns one shirt — the one he wore for the first time on the day of his marriage — and it has an anachronistic plastic collar.