letter-名词
函件
letter,correspondence
信
letter,faith,trust,message,sign,true
字母
letter,alphabet,letter of the alphabet,ABC
函
letter,case,envelope,envelop
书
book,letter,script,style of calligraphy
信件
letter,correspondence
字
word,character,letter,calligraphy,symbol,style of writing
书信
letter,epistle,written message
简
letter
铅字
type,letter
鸿
swan goose,letter
笺
letter,quiver,bow case,note paper
活字
type,letter
柬
card,note,letter
椷
box,letter
letter-动词
信
letter,believe,trust