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- To raise or lower(the boom of a crane or derrick. 升降使起重机的吊臂上升或下降
- The boom of a derrick. 人字形起重机的桁
- To raise or lower(the boom of a crane or derrick). 升降使起重机的吊臂上升或下降
- the boom of a derrick 转臂起重机的伸臂
- The stillness of night was broken by the boom of a drum. 咚咚的鼓声打破了夜的寂静。
- Don't stay under the arm of a derrick! 不要在起重机的吊臂下!
- The boom of the airplane was damaged. 飞机的尾桁受到损害。
- to raise or lower(the boom of a crane or derrick) 使（起重机的吊臂）上升或下降
- There was the boom of a bass drum, and the voice of the orchestra leader rang out suddenly above the echolalia of the garden. 大鼓轰隆隆一阵响，接着突然传来乐队指挥的声音，盖过了花园里嘈杂的人声。
- All of a sudden there came a strange sound of a faraway hiss and thump, followed by the boom of cannons, mingling into a dim roar that set the windows rattling. 突然听见有叫人觉得奇怪地、远方传来的呼啸声和碰撞声，随后又传来了一阵震动玻璃窗的炮弹的隆隆声。
- Stand clear of the swinging boom of the crane. 不要走近转动的超重机吊杆。
- We heard a hollow boom of thunder. 我们听到低沈的隆隆雷声。
- The cake we made was somewhat of a failure. 我们做的蛋糕不大成功。
- slued the swivel chair around;sluing the boom of a crane. 旋转转椅；转动一台起重机的吊杆
- slued the swivel chair around; sluing the boom of a crane. 旋转转椅；转动一台起重机的吊杆
- He doubles the parts of a farmhand and a miner. 在这出戏里他既扮演雇农又扮演矿工。
- The long boom of the crane function like our arms. 起重机的长臂与我们的手臂功能相同。
- We could hear the booms of the enemy guns in the distance. 我们可以听到远处敌人炮火的隆隆声。
- He went about in the disguise of a sailor. 他伪装成海员到处流窜。
- The novel unrolls the history of a certain woman. 那本小说揭露了某个女子的过去。
