Sailors have special equipment to help them navigate.船员们借助专门的仪器确定航向。Rescue workers had to use special equipment to cut open the steel doors.援救人员不得不使用特殊的器械把钢门切开。No special equipment is needed.无需任何专门设备。We were able to clean up the sound on the recording using special equipment.通过使用专门设备,我们改善了录音的音质。