一个英语句子 有关for them them 指代谁
Amazon,for instance,only reveals that it now stores more than 200 billion digital “objects” and has to fulfil nearly 200,000 requests for them per second
例如 亚马逊公司 仅透漏了 它现在存储着超过2000亿个物体 并且每秒不得不满足20万个请求 them 指代谁