on the market 和in the market 有何区别?是否有at the market?

问题描述:

on the market 和in the market 有何区别?
是否有at the market?

I am in the market for a new car!
我想买辆新车
Fresh bamboo shoot will be on the market this month
这个月有新竹笋卖
in the market:buy something
on the market:sell something