trading partner

A country that another country does business with, usually on a regular basis.

Japanese Meaning

取引相手国 / 貿易相手国

Canada has been our most reliable trading partner for agricultural exports.

カナダは農産物の輸出において、最も信頼できる貿易相手国となっています。

Sense（1）

A country that another country does business with, usually on a regular basis.

trading partners

（ plural ）