n the amount that many barrels might hold
n a tube through which a bullet travels when a gun is fired
n a cylindrical container that holds liquids
n a bulging cylindrical shape; hollow with flat ends
n the quantity that a barrel (of any size) will hold
n any of various units of capacity
v put in barrels
n. 桶( barrel的名词复数 ); 枪[炮]管; 一桶(的量); 桶(石油计量单位, 相当于120 到159 升)