试题题干
Translate the following sentence into Chinese.
Such a mission is a key component of EarthScope, a jointly led initiative by the National Science Foundation, NASA and the U.S. Geological Survey.
参考答案
试题解析
考点：a key component一个核心内容；EarthScope环境监测设备；National Science Foundation国家科学基金会。
句子结构：主句为Such a mission is a key component of EarthScope，a jointly led···补充说明a key component of EarthScope。