Gb	Eng
我再说一遍: 跑道尚未畅通, 不能起飞.	I repeat: the runway is not clear for take-off.
保持交通畅通无阻.	Keep the traffic flowing.
新的道路系统可使车辆在任何时候都畅通无阻.	The new road system permits the free flow of traffic at all times.
道路[通道]畅通吗?	Is the way/passage free?