dance to 按音乐节拍跳舞
date back to 追溯到,起源于
date from 起始于;追溯到
day after day 日复一日地
day and night 夜以继日, 日日夜夜, 日夜
day by day 一天天地
deal with关于,论及,论述; 处理;对付,对待
decide on/upon 就……作出决定,决定要,打定主意
decide to do sth. 决定做某事
defend against 保卫……免受……危害; 抵御