当你设定有形目标时，做好准备迎接挫折，这样就能更容易地留在既定轨道上并保持动力。

When you set tangible goals, and prepare for setbacks, it's far easier to stay the course and keep motivated.

youdao

随着2009年二季度真实GDP增长率达到7.9％，中国看似已经在通往年度目标8％的既定轨道上了。

With real GDP growth having reached 7.9% year on year in the second quarter of 2009, China already appears on course to achieve the government’s aim of 8% average growth this year.

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今年年底他们有可能将一艘无人驾驶的宇宙飞船送上月球既定轨道，这为中国宇航员最终登月奠定坚实一步。

It is possible that later this year China will launch an unmanned spacecraft to orbit the moon, a step towards an eventual moon landing by a Chinese astronaut.

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