n. noun 名词;
v. verb 动词;
prep. preposition 介词;
pron. pronoun 代词;
conj. conjunction 连词;
adj. adjective 形容词;
adv. adverb 副词;
art. article 冠词;
aux. auxiliary 助词;
int. interjection 感叹词;
pl. plural 复数;
abbr. abbreviation 缩写
