However, the analog-to-digital conversion is time- and energy-consuming, limiting the speed and efficiency of the neural network's performance.

然而，模数转换耗时耗力，限制了神经网络性能的速度和效率。

A deadly crash between two bullet trains in 2011 led to China limiting train speeds to 300 kilometers per hour.

2011年，因两趟高铁发生严重碰撞事故，中国将列车时速限制在每小时300公里。

In many cases, only the line from the exchange to the on-street cabinet is fibre, with copper still handling the last leg of the journey, limiting speeds.

在许多情况下，只有从交换机到路柜的线路是光纤，铜仍然处理旅程的最后一段，限制了速度。