[mass noun]the action of constructing a bridge over something 造桥 the bridging of a ditch. 在沟上筑桥。 ■(Climbing)a method of climbing a wide chimney by using the left hand and foot on one side wall and the right hand and foot on the other (登山)撑登(两腿分开撑住两边壁面向上攀登的方法)