So, you have to feed the slave all year round to work only a small part of the time, that's not very profitable.

你不得不整年的喂养奴隶,而他们只有少量时间在工作,这是很不划算的

耶鲁公开课 - 古希腊历史简介课程节选

You know, it's between 50 and 60 almost all year round and then,

全年大部分时间都是50到60华氏度，

旧金山的天气 - SpeakingMax英语口语达人