Suppose you are starting a business with somebody-- it could be at any time in history-- Babylonia or something--this must have happened.

假设你要和某人一起做一笔生意...,可以在任何一个时代...,例如古巴比伦或者其他时代...肯定发生过这种事

耶鲁公开课 - 金融市场课程节选

In contrast,you can walk down the sidewalk with somebody.

相对的，你也可以和某人一起走。

耶鲁公开课 - 死亡课程节选