大副：舷梯应一直有人值守。确保舷梯值班与你保持无线电联络。

Chief Officer: the gangway must be manned at all times. Make sure the gangway watchman is in radio contact with you.

youdao

麦格劳说，“人们都认为所有航班，甚至当它在跨越海洋时，都能在某类有人值守的雷达屏幕上被看到。

People are under the impression that every airplane, even when it's flying across the ocean, is observed on some kind of radar scope, with a human being looking at that scope.

youdao