一课译词
老掉牙 - out-of-date means of transportation

众所周知,人老了牙齿也会跟着老化、脱落,而形容一个人“老掉牙的模样”就是比喻一个人上了年纪的模样。
- That joke you told us is as old as Adam.
- This obsolete expression is already out of use.
*本篇文章来自中国日报网
一课译词
老掉牙 - out-of-date means of transportation