1. Doubling the frequency of logical operations inside a microprocessor doubles the heat output. 微处理器内部逻辑操作的频率加倍，产生的热量也加倍。
2. In the US, studies have shown that doubling the size of a road can simply double the traffic, taking us back to the starting point. 研究表明，在美国，将道路的规模扩大一倍，只会使交通量增加一倍，这样我们又回到了事情的起点。
3. Losing a job is hurting: you don't skip down to the job centre with a song in your heart, delighted at the prospect of doubling your income from the generous state. 失去一份工作是痛苦的：你不会在心里哼着歌蹦蹦跳跳地去就业中心，为你能从这个慷慨的国家获得双倍收入而高兴。
4. Meat output 'doubling'. 肉类产量的“加倍”。
5. His firm's revenues are doubling yearly. 现在他公司的收入每年都几乎翻一番。
