部分原因是，设定现实目标的人确实工作效率更高、更努力去实现这些目标。
That's partially because it appears people who set realistic goals actually work more efficiently, and exert more effort, to achieve those goals.
为每个任务都设定截止期限肯定能帮助你提高效率。
Setting a deadline for each task can definitely help improve your efficiency.
一项合作研究成果着眼于新一代超音速运输飞行器的概念，以满足NASA为2030世代设定的噪音、排放和燃油效率目标。
A companion research effort looked at concepts for a new generation of supersonic transport aircraft capable of meeting NASA's noise, emissions and fuel efficiency goals for 2030.
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