He has some foreign matter in his eye.

他眼睛里有异物。

《新英汉大辞典》

This food contains foreign matter.

这食物含有杂质。

youdao

Metal, oil and soap contains foreign matter, respectively.

金属、油和胰子中辨别含有杂质。

youdao

Otherwise, it is not out of the realm of possibility that the IRS may take the submission that the statute of limitations never begins to run when there is an omission in the provision of foreign information, no matter how small or insignificant.

FORBES: THE GOOD OLD DAYS PRE-FACTA

As a result of shifting responsibility for retirement planning onto workers and financial product innovation, virtually all Americans (and foreign investors for that matter) that had accumulated any degree of wealth turned to financial services firms for expert, independent investment advice and investment products.

FORBES: On Your Own: Investing in An Era of Irrelevant Regulation (October 2009)

The most important, in the United States and in most other countries, is a positive declaration that gold, and gold-based instruments (such as gold-based bank accounts and so forth) would be permitted for monetary usage, just as we use dollars or, for that matter, foreign currencies such as Canadian dollars or euros.

FORBES: My Day In Washington, Testifying Before Rep. Ron Paul