batches
一批（batch 的名词复数）
例句
We deliver the goods in batches.
我们分批交付货物。
《牛津词典》
In each packet there are batches of letters, most of which are undated.
每个包里都有成捆的信件，大部分都是未标注日期的。
《柯林斯英汉双解大词典》
Ever since the 1940s, vaccine makers have grown large batches of virus inside chicken eggs.
自20世纪40年代以来，疫苗制造商已经在鸡蛋中培养了大量的病毒。
