melvill 基本例句 n.梅尔维尔 It was a decidedly adventurous undertaking, hardly guaranteed of success, and indeed Melvill had to pull the spacecraft out of a significant and unplanned spin toward the apex of the flight. 这是一个决定性的冒险事业，几乎没有成功的保证，而事实上梅尔维被迫让出一对航天器的飞行顶点重大和无计划的自旋。 bugutang