- 1. 
书 follow; carry on - ♦ 因袭
 - 2. 
书 rely on; accord with - ♦ ~病下药 suit the medicine to the illness
 - ♦ ~其自然 let things take their natural course
 - ♦ 必有他~ there must be some other reason
 - ♦ ~病请假 ask for sick leave
 - ♦ ~公牺牲 die while on duty; die at one's post
 - ♦ 会议~故延期。 The meeting has been postponed for some reason.
 - ♦ 他~有其他事情未能出席。 He was absent because he had other things to attend to.