您要查找的是不是：
- Effect of Mass Difference between Host Ions on the Phonon Assisted Energy Transfer Rates of the Active Ions in Crystals 晶体离子质量差异对激活离子声子参助能量传递几率的影响
- They are building a submarine cable tunnel. 他们正在建设一条海底电缆隧道。
- They are digging through the hill to make a tunnel. 他们正在凿山建一条隧道。
- He assist me with my income tax return. 他帮助我填写所得税申报单。
- Jack used to assist Mary in her lessons. 杰克过去常常帮助玛丽学习功课。
- The kid dug a tunnel in the sand. 小孩在沙堆里挖了一个地道。
- They were tunneling under the river. 他们在河下挖掘隧道。
- He assisted in designing the new bridge. 他协助设计那条新桥。
- The workers are tunneling the hill. 工人们在凿山开隧道。
- The two lanes merge going into the tunnel. 两条车道会合后引入隧道。
- The truck cleared the tunnel safely. 卡车安全地通过了隧道。
- He has to stoop to get through the tunnel. 他得弯下腰走过地道。
- The roar of the train reverberated in the tunnel. 火车的轰隆声在隧道里回荡。
- He asked us to assist him in carrying through his plan. 他请求我们帮他完成他的计划。
- The prisoner escaped by digging an underground tunnel. 囚犯挖了一条地道逃跑了。
- A team of nurses assisted the doctor in performing the operation. 一组护士协助医生施行手术。
- The roof of the tunnel caved in (on the workmen). 隧道顶坍塌(压住工人).
- He rounded off his short speech by thanking everyone who had assisted him. 他对帮助过他的每个人表示了谢意，以此结束了他简短的讲话。
- We asked him to assist us in designing a new bridge. 我们请他帮助我们设计一座新桥。
- The roof of the tunnel was supported by wooden props. 坑道顶用木柱支撑。
