Amtrack
(=American track)全国铁路客运公司[美]
🗣️ 情景例句
He appeared ill at ease at the party.
他在宴会上显得很拘谨。
Come back!
回来！
Over the years, one may well become a authority on one's hobby and will very probably be asked to give informal talks to little gatherings and then,
一人积了多年经验会成为自己这种爱好的权威，很可能应邀在小型集会上作非正式的讲话。