tā / yǐ / jīng / mí / bù / zhī / fǎn / péng / yǒu / men / dōu / quàn / tā / jǐn / kuài / huí / tóu他已经迷不知返,朋友们都劝他尽快回头。He has gone too far astray, and his friends are urging him to turn back soon.