tread upon eggs 和have egg on one's face

tread upon eggs 审慎的提出一个供讨论的题目；如履薄冰‘战战兢兢
have egg on one's face 受羞辱；丢脸
break the egg in sb's pocket 打破某人的计划
go lay an egg 别管闲事
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你好，
tread upon eggs：小心翼翼地行事
have egg on one's face：出丑，丢脸，显得很尴尬。

tread upon eggs
如履薄冰；(行动)瞻前顾后；战战兢兢；小心翼翼地行动，谨慎行事
have egg on one's face
丢脸，出丑；形象受损害