course keeping course-keeping go as course hold course keep the aircraft straight maintain course to hold …on course to hold…on course wend as course wendascourse went as course wentascourse
We ' ve got zero visibility . maintain heading and speed 我们的能见度为零保持航向和速度
2.
Remain on heading 089 descend to 7000m 保持航向89度下降到7000米。
3.
The viking longboats that arrived here in 982 relied on the stars and the sun to maintain their orientation 斯堪的纳维亚人的海盗小艇在公元982年就抵达格陵兰岛,他们能保持航向靠的只是星星与太阳的位置。