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put sb to shame 使某人感到羞愧
Eg: What you have done put your parents to shame.
to one’s shame令人惭愧的是(review to one’s shame)
Eg: To my shame ,I didn’t pass the exam.
What a shame!（真可耻，真遗憾）= Shame on you !
Eg: What a shame that it rained today! ≠ Shame on you!
border较宽的边缘，边界，多指两国或两地之间的分界处附近的边缘地区、边界地带；也可以指物体的边缘等。
boundary n.边界；界线。多指作为界线的标识物等。
frontier n.边界，边境，边疆，指靠近边界(boundary)的区域；也可引申为"未开发的领域"，"(学术的)前沿"等。
rim n.边，边缘，尤指圆形或近似圆形的物体的边缘。
verge n. (道路、花坛等长着草的)边缘，引申为"某事即将发生之际"。(on the verge of war战争爆发之际)
