Adding to investor wariness about commodities are concerns about the possibility of deflation, or a decline in the general level of prices for goods and services.

投资者还担心有可能出现通货紧缩，也就是商品、服务的总体价格水平下降，因而对大宗商品就更加谨慎了。

youdao

But we also talked about commodities.

FORBES: How Much Commodity Exposure Is The Best?

It joins just a handful of firms that have formally told U.S. commodities regulators about plans to set up an EBOT.

FORBES: Magazine Article

But there is no getting around the fact that two of the staples of the world food industry are about to become scarce commodities.

BBC: US crops tell story of future world food prices