HSK 5
行
háng名量
(bound form) row; line; (bound form) line of business; trade; profession; (bound form) commercial firm; (bound form) to rank (first, second etc) among one's siblings (by age)
哥哥进入了餐饮这一行。
Gē ge jìn rù le cān yǐn zhè yì háng.
My older brother entered the food-service trade.
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New in the HSK 3.0 word list at level 5.