flyby 也作 fly-by

n.（名詞）
【復數(shù)】 fly.bys
A flight passing close to a specified target or position, especially a maneuver in which a spacecraft or satellite passes sufficiently close to a body to make detailed observations without orbiting or landing.
飛越：一架飛機靠近或飛越某指定地點或目標，尤指為獲得對某一天體的詳細觀察而在不進入軌道或著陸的情況下操縱飛行器或衛(wèi)星以足夠近的距離飛過