Meaning of nài:
奈
used in expressions that convey frustration and futility, such as 無奈|无奈[wu2 nai4] and 莫可奈何|莫可奈何[mo4 ke3 nai4 he2] (literary); used for its phonetic value in writing foreign words
Tā duì zhège wèntí gǎndào fēicháng wúnài.
他对这个问题感到非常无奈。
He feels very helpless about this problem.
Běihǎidào shì Rìběn de yī gè měilì de dìqū, qízhōng bāokuò zhùmíng de Zháhuǎng hé Hánguǎn shì, háiyǒu měilì de Nài liáng shì.
北海道是日本的一个美丽的地区,其中包括著名的札幌和函馆市,还有美丽的奈良市。
Hokkaido is a beautiful region in Japan, including the famous cities of Sapporo and Hakodate, and the beautiful city of Nara.