它们就是闪光灯和一个高速触发器。
These are the flashes that light the scene, and a high-speed trigger.
高速触发器在环境音量超过特定的水平时启动闪光灯。
The high-speed trigger sets off the flashes when the ambient sound volume goes over a certain level.
“除了相机外，还有两个主要的设备，他们事实上是整个过程中最不重要的部分，”爱德补充道。“它们就是闪光灯和一个高速触发器。”
'There are two main pieces of equipment besides the camera, which is really the least important part of the process,' added Ed. 'These are the flashes that light the scene, and a high-speed trigger.
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