A flyby is when a spacecraft goes close to a planet, moon, or comet but does not stop or land. It passes by, takes pictures and measurements, and carries on. Space agencies plan flybys because landing is hard and expensive; flying past still teaches you a lot.

A flyby is whenflyby是指 a spacecraft goes close to a planet, moon, or comet太空船靠近一顆行星、衛星或彗星，but does not stop or land但不停下來、也不降落。It passes by牠會飛過去，takes pictures and measurements拍照、做測量，and carries on然後繼續前進。Space agencies plan flybys太空機構會規劃flyby，because landing is hard and expensive因為降落既困難又昂貴；flying past still teaches you a lot只是飛過去也還是能學到很多東西

This is mainly a science and news word. You will hear it when a probe visits a planet: The spacecraft will make a flyby of Jupiter. The point is the close pass — near enough to study, not near enough to stay.

This is mainly a science and news word這主要是科學和新聞用語。when a probe visits a planet當探測器造訪一顆行星時 You will hear it你會聽到這個詞：The spacecraft will make a flyby of Jupiter這艘太空船將對木星進行飛掠。The point is the close pass重點在於這次近距離掠過——near enough to study近到可以研究，not near enough to stay但不會近到留下來

Though actually, people also use flyby for a plane that flies low over a place. That everyday use sits closer to flypast or flyover. The sense here is the space one: close pass, gather information, do not land.

Though actually不過其實，people also use flyby for a plane that flies low over a place大家也會用flyby來指飛機低空飛過某個地方。That everyday use sits closer to flypast or flyover這種日常用法比較接近flypast或flyover。The sense here is the space one這裡講的是太空那個意思：close pass, gather information, do not land近距離掠過、蒐集資訊、不降落