The people--rice merchants would bring their rice

米商们把大米
to Dojima and sell them there.

带到堂岛卖掉
Naturally, as you would expect,

很自然的你能想到
there were big warehouses for rice, which would store it;

那里有存放大米的大型仓库
it would be a natural thing to see at the center of trade.

在交易中心是很常见的
It was a big and thriving trade center.

这是一个庞大而兴盛的交易中心
People, when they buy--so incidentally,

当人们购买偶然间
let's talk about the fundamental problem.

我们来说说基本问题
Agricultural commodities like rice are harvested typically once a year.

像大米这样的农产品通常一年收获一次
Actually, I think rice has more than one harvest,

事实上大米每年不止收获一次
but let's just simplify it;

但是我们简化一下
let's say it's harvested once per year.

假设它是每年一熟