The round-trip travel time pinpoints the Earth-Moon distance.

往返的时间间隔精确地算出地月间的距离。

youdao

It is capable of erasing the magnetic information on a credit card at a distance halfway to the Moon.

它的磁性可以在离月球一半的距离之外，把信用卡上的磁性扫光。

youdao

This three different solar eclipse occurred with the sun, moon and Earth all three of the mutual changes of position, and also decided on the Moon and the distance between the Earth changes.

这三种不同的日食的发生跟太阳、月球和地球三者的相互变化着的位置有关，并且也决定于月球与地球之间的距离变化。

youdao

In 2002 a mid-sized asteroid (50-120 metres across) missed Earth by 121, 000km one-third of the distance to the moon.

ECONOMIST: Green.view: The threat from outer space | The

The asteroid, which is 140 meters (460 feet) in diameter, will get no closer to Earth than 890, 000 kilometers (553, 000 miles), or more than twice the distance to the moon, NASA said.

CNN: Phew! Asteroid to miss Earth in 2040, NASA says

But the size of the Earth is a few percent of the distance to the moon, which translates to about a 7% stronger gravitational pull on the near side of the Earth than the far side.

CNN: The sun, the moon and the Titanic