batch词源

词源是bat，其构词法是词源bat+后缀ch，中文意思是n. 一批，一批生产量，v. 分批处理

She brought a large batch of newspaper clippings.她带来一大批剪报。

Each summer a new batch of students tries to find work.每年夏天都有一批新的学生要找工作。

I have a batch of letters to answer.我有一批信要回复。