Astronomical research began to spread over the whole range of electromagnetic waves.
天文研究开始向整个电磁波谱范围延拓。
Surface subsidence range is limited which can not spread to neighborhood of the dam.
地面塌陷范围有限,不会波及到大坝附近;
Surface subsidence range is limited which can not spread to neighborhood of the dam.
地面塌陷范围有限,不会波及到大坝附近;
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