flyby 也作 fly-by

n.（名詞）
【復(fù)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(jī)靠近或飛越某指定地點(diǎn)或目標(biāo)，尤指為獲得對(duì)某一天體的詳細(xì)觀察而在不進(jìn)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(guò)