这就是罗勃津斯基原理：在两种商品的世界中，如果价格固定不变，一种生产要素的增长实际上会减少一种商品的产量。

This is the Rybczynski theorem: in a two-good world, the growth of one factor of production actually cuts the output of one good if prices are constant.

youdao

原油是世界上最重要的商品。

Crude oil is the world's most important commodity.

《牛津词典》

世界各地都接受货币作为购买商品或提供服务的付款方式。

Money is accepted across the world as payment for goods or services.

youdao

These then became the objects of trade, of commerce, and of course of human diets and these had nutritional implications for people in different parts of the world.

这些随后成为了交易品和商品,当然,也成为了人们的日常饮食,对于来自世界不同地方的人们,这些食物都是有营养方面的考虑的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选