As you can see from the map we kept to a straight course pretty well.
你可以从地图上看到，我们很好地保持了这条笔直的航线。
In this way the ship could set a straight course even in the middle of the ocean.
用这种方法可以设定船舶直线路线，即使在大海中间。
In this way the ship could set a straight course even in the middle of the ocean.
用这种方法可以设定船舶直线路线，即使在大海中间。
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