That was confirmed in the early 1990s by the American Magellan orbiter which used radar to peer through the planet's thick clouds and mapped out a rich, varied and dynamic surface.
2019年6月六級(jí)真題（第二套）聽(tīng)力 Section C
英英詞典釋義
Noun
1. Portuguese navigator in the service of Spain; he commanded an expedition that was the first to circumnavigate the world (1480-1521)