be sure of success
⇒ 我们为这次登山活动做了精心准备,以确保万无一失。
We made careful preparations for climbing the mountain, so as to be sure of success.
英语词典包含298861条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。