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。No special equipment is needed.无需任何专门设备。Rough seas today prevented specially equipped ships from skimming oil off the water's surface.今天海面上风浪很大，那些配有专门设备的船只无法展开清除海面浮油的工作。