We can jettison any kind of landing system.

我们可以抛弃任何形式的着陆系统。

Did a Runway close, did the instrument landing system close, did a frequency change?

跑道关闭了吗，仪表着陆系统关闭了吗，频率改变了吗？

As I said earlier, the ship's emergency landing system has been successfully tested.

我刚才说过，舰上的紧急着陆系统已经成功测试。

Our indicators show that our landing system has failed, which necessitates that we abort the flight and return to New York.

指示器显示，我们的着陆系统失灵了。我们必须放弃飞行，返回纽约。

And whilst clear vision is always going to be important, advances such as improved instrument  landing systems and TCAS (Traffic Collision Avoidance System) made them less necessary.

虽然清晰的视野始终很重要，但改进的仪表着陆系统和 TCAS（交通防撞系统）等进步使它们变得不那么必要了。