In this case, both the vacuumrelease valve and the stoplight switch are actuated by movement of the brake pedal.
在这种情况下，真空释放阀和制动灯开关都有刹车踏板的运动控制。
2
The most interesting observation, however, is that this company -- and many others like it -- haven't yet realized that the change, build, and release processes don't exist in a vacuum.