a是什麼意思_a的翻譯_音標_讀音_用法_例句_愛詞霸在線詞典
DET (指初次提及或非特指的人或物)一(個) You use a or an when you are referring to someone or something for the first time or when people may not know ... Some parents believe a boy must learn to stand up and fight like a man. 有些父母認為男孩子必須 ......