爱不释手to fondle admiringly (lit. to love sth too much to part with it)

爱憎分明to be clear about whom or what to love or hate

按部就班follow conventional procedures;in accordance with the prescribed order

安居乐业live in peace and work happily

安然无恙to be in a good situation without any problem;usually pertaining to health

按图索骥follow clues to locate sth. (lit. looking for a fine horse using only a picture)

安土重迁hate to leave a place where one has lived long;be attached to one’s native land and reluctant to leave

拔苗助长spoil things by excessive zeal

百步穿杨shoot with great precision

白首偕老grow old together (as in a couple)