（二）发现、阻断为违法犯罪活动架设通信线路，提供设备运维、增强信号等行为；
It was not immediately clear what caused the crash, but some witnesses said the weather at the time was treacherous.
，这一点在heLLoword翻译官方下载中也有详细论述
Call of Duty maker defends gaming's impact on young men
We cannot, and should not, expect users to know this.