word by word ,read word groups.为什么前面不和后面一样用复数

word by word ,read word groups.为什么前面不和后面一样用复数 word by “word word word by word的意思 word by word翻译中文? word for word 与 word by word的区别 word for word和word by word的区别! word的复数 in groups or in a word READ the word和 SAY the word有什么不同 求单词“word” 用法.the word ,a word,word,单复数时意思等.例如：word作谣言意思时?