within its four corners

网络释义

1.	昭然若揭 ... 坦然自若1. calm and confident;completely at ease 昭然若揭 within its four corners 泰然 calm;composed;sangfroid ... zh-tw.w3dictionary.org

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英汉双解词典包含2704715条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。