Some residents accused city officials of applying a double standard.
一些居民指责市政府官员使用双重标准。
《柯林斯英汉双解大词典》
2
Take plenty of breaks, because they offer a double bonus: the time off gives your mind a chance to do some preliminary consolidation and it also gives a memory boost to the learning.
多休息，因为休息有双重好处：休息能让你的大脑有机会进行一些初步的巩固，也能提高学习的记忆力。
3
At its peak in 2007 it was worth some $65 billion, reckons Clare McAndrew, founder of Arts Economics, a research firm—double the figure five years earlier.
Arts Economics 研究公司的创始人克莱尔·麦克安德鲁估算，在2007年的巅峰期，它的价值约为650亿美元，是五年前的两倍。