n an arrangement of objects or people side by side in a line
n an angry dispute
n a long continuous strip (usually running horizontally)
n (construction) a layer of masonry
n a linear array of numbers, letters, or symbols side by side
n a continuous chronological succession without an interruption
n the act of rowing as a sport
v propel with oars
n. 返回引用中的行数；行（row的复数形式）