| 释义 |
i.on.o.sphereHaI5Bn7E.sfi:5, $-5B:n7E.sfi:rn [U]the ionosphere part of the Earth's ATMOSPHERE (=the gaseous layer surrounding the planet), from about 60 kilometres to about 1000 kilometres above the surface, in which there are many IONS.电离层☆STRATOSPHERE
|