One thousand metres go to the kilometre.

一千米为一公里。

The house is at an elevation of 2, 000 metres.

那幢房子位于海拔两千米的高处。

Their tents were situated at an elevation of 3000 metres.

他们的帐海拔三千米的高处。

Called Auroral Kilometric Radiation (AKR), the noise is generated by the same shaft of solar particles that produces an aurora in the atmosphere below.

所谓极光千米辐，噪声是由太阳微粒，而这些微粒大气底层的极光。