Narendra Modi, the powerful and acutely image-conscious prime minister of India, is suddenly facing a political problem he had not anticipated on entering his 13th year in office. 印度总理纳伦德拉·莫迪一向强势且极其在意形象。在执掌权力进入第13个年头之际，他突然面临一个始料未及的政治难题。 Mr. Modi has had his…