At an average distance of 2.8 billion miles (4.5 billion kilometers) from the sun, Neptune takes about 165 Earth years to finish a single orbit.
海王星距离太阳平均28亿英里(相当于45亿公里),绕太阳转一圈需要165个地球年。
Under the new plans, the distance from West Street has been increased from 25 feet (7.6 metres) to an average of 90 feet (28 metres).
在新公布的设计方案中,建筑物与西街的距离由25英尺(7.6米)增加到平均90英尺(28米)。
The timeamount and distance will have error, so many people should cooperateand do an experiment many times for the average.
可能计时,量距离会有误差,于是多人配合并且多次实验取平均值。
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