natural earth的意思|示意
美 / ˈnætʃərəl ə:θ /
英 / ˈnætʃərəl ɚθ /
天然土
natural earth相关例句
Artificially applied currents were dispensed with entirely and natural earth currents used instead there.
在那里完全不用人工施加电流而用地球内部的天然电流来代替.
辞典例句