Amtrak
辅助 Assistantabbr. 美国铁路公司（American track）
🗣️ 情景例句
When was it built?
它是什么时候建造的？
John stopped to study.
约翰停下来去学习。
Carlyle was entirely ignorant of what the bottle in his pocket contained,
卡莱尔不知道药瓶子里装的是什么药，