The gains of Italian opera singers, German governesses, French ballet dancers, &c., are a source of wealth, as far as they go , to their respective countries, if they return thither.

• 意大利的歌剧演唱家、德国的家庭女教师、法国的芭蕾舞演员等在国外的收入，在他们回国时，便成为本国财富的一个来源。