When we're working on something without a sense of urgency and pressure, we're usually stopping to check email or chat with the guy in the next cubicle in the process.
当我们的手头的事没有一丝紧迫感或者压力时，我们常常会停下来去收收邮件或者和边干活边和隔壁的同事聊天。
Steady speeds without stopping will usually give the best fuel economy.
没有停顿的稳定车速通常会有最好的燃油经济性。
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