藏书量：
volume
well-stocked bank of resources
have/keep……books
动作：
check out
how long can I hang on to them for?
renew
recall
overdue/due
return in time
pay a fine
print/photocopy (black-and-white; color)
magnetize/demagnetize
书的状态：
available
out on loan
out of circulation
not for circulation
be available for reference only
可借项目：
book
newspaper
video tapes
cassette
journal
periodical
monthly
daily
quarterly
bimonthly
supplement
current issue
back issue
textbook
reference books
bibliography
manuals
novel
fiction
电脑阅览：
computer
ADS: a wide range of databases (useful/useless information)
access the computer-loaded information
status: in great demand
need book in advance
