For three years, Mahendra Dharmapriya, a Sri Lankan restaurateur, filled the streets of his neighborhood in rural Japan with the smells of his homeland: creamy lentils, fish curry, egg hoppers and black tea with ginger. 三年来，斯里兰卡餐馆老板马亨德拉·达尔马普里亚一直让他家乡的味道弥漫…