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月六級真題（第二套）聽力 Section C
Archaeologists also may locate buried remains by using such technologies as ground radar, magnetic- field recording, and metal detector.
出自-2014年考研閱讀原文
Airborne technologies, such as different types of radar and photographic equipment carried by airplanes or spacecraft, allow archaeologists to learn about what lies beneath the ground without digging.
出自-2014年考研閱讀原文
airborne technologies, such as different types of radar and photographic equipment carried by airplanes or spacecraft, allow archaeologists to learn about what lies beneath the ground without digging.