大地水准面 [测] geoid ; geoidal surface ; geoid surface ; mean sea level
有专家水准地 expertly
大地水准面高 [测] geoidal height ; geoidal undulation ; geoid height
大地水准面波动 geoid undulation
地表水准 surface level ; grass root's
大地水准面地平圈 geoidal horizon
大地水准面起伏 undulation of the geoid ; geoid undulation
地貌水准面 geomorphic levels ; geomorphological level surface
大地水准测量 geodesic leveling
我不断地练习打网球有数年了，从未为了达到一个真正的高水准每天必须练习几个小时。
I have practiced tennis deliberately over the years, but never for the several hours a day required to achieve a truly high level of excellence.
我们很高兴地看到，颐和园已经达到了很不错的水准：那儿的英文解释很充分，几乎完全正确。
The Summer Palace, we have been pleased to discover, sets an excellent standard: the explanations there are full and almost completely correct.
不是每个开发人员都需要如此细致地了解并发性，也不是每个工程师都能达到本书的水准，但却没有比本书更好的关于并发性编程的概述了。
Not every developer needs to know about concurrency in such detail, and not every engineer is up to the level of this book, but there's no better survey of concurrent programming than this.
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