外来物：指不属于某个系统、组织或环境的物质或事物。
异物；杂质-引用次数：1
参考来源基于机器视觉的智能灯检机的研究
异物
Milk is put through a clarifier to remove any foreign matters.
牛奶要经过一个澄清器来除去杂质。
Detection goal: detect the metal foreign matters in the detected material.
检测目的：检测出被检测物品中的金属杂质。
Appearance: white, free flowing, free from harmful substances and foreign matters.
外观：白色，自由流动，无有害物质和杂质。
The Lib Dems are passionate about their pro-Europeanism, their liberal take on crime and their dovishness on military and foreign matters.
Add in the idea that the election will be fought at a time when (for once) voters are concerned about foreign matters in a way that should help the president, and you can see why the Republicans are confident.
The meeting with Netanyahu was mostly one to foster bilateral cooperation rather than foreign policy matters.