heart and soul 一心一意 

ebb and flow 人世盛衰

cloak and dagger 秘密的行动

law and order 秩序

move heaven and earth 不遗余力

part and parcel 不可或缺

pomp and ceremony 盛典

rain or shine 不论如何

rank and file 大众

(fight) tooth and nail 全力以赴

treat or trick 不给甜头就有好看的

注：万圣节里小孩挨家挨户的讨cookie，say "treat or trick"

facts and figures 确凿的事实

hugs and kisses 热情欢迎

ins and outs 来龙去脉

odds and ends 零零星星