问题补充：
“缩短了工作时间提高了工作效率”用英语怎么说?
答案：
Shorten the working hours and improve the efficiency.
工作时间：working hours 是标准的翻译 可查金山词霸
提高了工作效率 中“提高”是一个抽象概念 用improve 比较好
======以下答案可供参考======
供参考答案1:
shorten the working time and enahnce the efficiency
供参考答案2:
Reduced the operating time and enhanced the efficiency
供参考答案3:
Shorted the amount of time it takes, and raised the efficiency
