We are cleared by Air Traffic Control to taxi and take off.我们的空中交通管制解除，可以滑行和起飞。Traffic was halted on a highway to allow pilots to rehearse landing on the road.在一条公路上实行交通管制，以便飞行员演习公路降落。They have to wait for clearance from air traffic control.他们需要等空中交通管制人员的放行。