Reasonably accurate for the time, that is quite close to today's value of 149,597,870 km, determined by radar, which has now superseded transits and all other methods in accuracy.

那个数值与今天雷达测定的149,597,870公里相当接近，就当时来说准确度很合理，雷达在精度上已经取代了凌日和其他所有方法。

youdao

Itsrevolutionary technology means that propulsion comes from the track, not thetrain, resulting in low noise, speeds of up to 285 km/h and a journey time ofjust eight minutes.

采用革新技术的磁悬浮列车依靠轨道的推力前进，而非火车车身。 因此，运行过程中，噪音极低，时速达285公里，浦东到市区只需八分钟。

youdao

According to NASA, a total eclipse, when the moon passes between the earth and the sun, is only visible from a narrow strip - about 150 km wide - of the Earth's surface at any one time.

据美国宇航局所说，整个日食过程，即在月亮位于地球和太阳之间的时间内，也仅仅在地表一条约150公里宽的狭长地带的某一时刻可以观看到。

youdao

The delay simulates the time it would take real signals to travel many millions of km across space from an asteroid.

BBC: UK astronaut Tim Peake makes 'asteroid splashdown'

"Receiving the drug itself is a major investment of a patient's time, so if you live 8 km from the nearest clinic and have to go there once a month and you don't have a ready means of transport it's a huge investment of your own time, " he told the BBC.

BBC: NEWS | Africa | HIV treatment 'failing' in Africa