But allowing autonomous commercial drones to deliver customers' parcels in cities would cross a perceptionthreshold.
但允许自动商用无人机在城市递送客户包裹将跨越一个认知门槛。
2
You are on the threshold, in fact in process, of a transformation in every level of perception, awareness and experience.
你们处于一个各层次的感知，觉察与体验的转变的门槛上，事实上是在进程中。
3
Audio information hiding algorithm based on spread spectrum is generally detected by correlation threshold but the orthogonal of pseudorandom sequence is always destroyed by perception reshaping.