acc = account, accountant
acdg = according
acpt = accept
ad = advertisement
adm = administration
ads = address
adv = advice
agr = agriculture
agt = agent
alt = altitude
a.m. = ante meridiem = before noon
AMAP = as much as possible
amb = ambassador
amt = amount
anal = analysis
anc = ancient
anon = anonymous
ans = answer
app = appendix
Apr = April
apt = apartment
arch = architecture
arr = arrive; arrival
ASAP = as soon as possible
ass = assistant; association
at = atmosphere; atomic
Aug = August
aux = auxiliary
av = average
ave = avenue
a.w.l. = absent with leave (准假)
a.w.o.l. = absent without official leave (无故缺席)