常见例句双语例句Mrs. Clinton acknowledged the difficulties ahead at a time when, she said, the number of global Internet users could swell by 5 billion within 20 years.希拉里承认当20年内，全球互联网用户的数量增至50亿时，重重困难将会出现在眼前。 她说：“我们是在打一场持久战。” 返回 ahead swell