A long spar extending from a mast to hold or extend the foot of a sail.
A long spar extending from a mast to hold or extend the foot of a sail.
帆下桁从桅杆上伸出的长杆，用来支撑或伸展帆的下端
A long spar extending from a mast to hold or extend the foot of a sail.
帆下桁从桅杆上伸出的长杆，用来支撑或伸展帆的下端