自底向上

【计】 bottom-up

自的英语翻译：

certainly; from; of course; oneself; self; since
【建】 auto-

底的英语翻译：

a copy kept as a record; base; bottom; end; fundus; the truth of a matter
【医】 base; basement; bases; basi-; basio-; basis; batho-; bathy-; fimdi
floor; fundus; pavimentum; solum

向上的英语翻译：

up; up-and-up; upswing; uptilt; upward
【医】 ana-; ano-