at peace   (TTS發音)

in harmony； in a state of friendship or quiet處于和平（和睦）狀態；處于平靜狀態

    If only the world were at peace. 全世界都和睦相處就好了。

    We are fortunately at peace with all the world today. 我們今天有幸能和世界各國和平共處。

    After taking the medicine， she felt at peace with herself. 吃過藥之後，她感到平靜多了。