maintenance
n.
mid-14c., "bearing, deportment," from Old French maintenance "upkeep; shelter, protection,: from maintenir (see maintain). Meaning "action of upholding or keeping in being" is from early 15c. "Action of providing a person with the necessities of life" is from late 14c.
〔蒋〕[manu=hand手(manu也作man)，ten=tain，-ance名词后缀] 保持，保存，保养，维修
〔蒋〕[tain，ten，tin=hold握，持，守，ten=tain，-ance名词后缀] 保持，维持，坚持