在国外参加礼仪怎么说英语

To participate in etiquette abroad, you can say "to participate in foreign etiquette" or "to observe etiquette while abroad." Etiquette refers to the customary rules of behavior that are considered proper or polite in a particular social group or culture. These rules can vary significantly from one place to another, so it is important to learn about and respect the etiquette of the country you are visiting. You can also use the phrase "to follow local customs" to indicate that you are trying to be respectful and follow the norms of the place you are visiting.