A bottom-up plan starts with the small, practical pieces — what people actually do, what a local office knows, what you can build this week — and only later draws the big picture. You do not begin with a grand idea from the top and push it down.

A bottom-up plan一個 bottom-up 的計畫 starts with the small, practical pieces從小而實際的零件開始—— what people actually do人實際在做的事、 what a local office knows地方單位知道的事、 what you can build this week你這週就做得出來的東西—— and only later之後才 draws the big picture畫出大的藍圖。 You do not begin with你不是先拿 a grand idea from the top上頭來的一個宏大想法 and push it down再往下推。

Managers, software people, and researchers use this pair a lot: bottom-up versus top-down. It is a fairly formal workplace word, not something you say about making dinner, though the idea is simple: build from the ground, do not start from the sky. Though actually, real organisations mix both; the tidy pair is tidier than the work.

Managers, software people, and researchers經理人、軟體圈的人和研究者 use this pair a lot很常用這一對字： bottom-up versus top-down由下而上，對上由上而下。 It is a fairly formal workplace word它是個相當正式的職場用字， not something you say about making dinner不是你講煮晚餐時會用的話， though不過 the idea is simple概念很簡單： build from the ground從地面蓋起來， do not start from the sky不要從天上開始。 Though actually不過其實， real organisations真實的組織 mix both兩種都混著用； the tidy pair這對整齊的說法 than the work比起實際的工作 is tidier又更整齊了一些。

Bottom-up here is not “upside down”, and it is not the toast bottoms up! with a drink.

Bottom-up here這裡的 bottom-up is not "upside down"不是「上下顛倒」， and it is not也不是 with a drink喝酒時 the toast bottoms up!那句敬酒詞 bottoms up!（乾杯）。