For example,many people in Russia consider smiling at strangers in public to be unusual and even suspicious behaviour. Yet many Americans smile freely at strangers in public places.

• 例如，许多俄国人认为当众对陌生人微笑是非同寻常的，甚至是可疑之举，而许多美国人却常在公共场合无拘无束地向陌生人微笑。