A stage of a journey or course, especially:
一段航程或路线，尤指：
Nautical The distance traveled by a sailing vessel on a single tack.
【航海】 一段船泊行程：帆船在一个抢风直驶中所行的一段航程
The part of an air route or a flight pattern that is between two successive stops, positions, or changes in direction.
一段飞行航程：位于两个连续的降落、位置或方向转变之间的飞行航线或飞机航程图的一部分
One of several contests that must be successfully completed in order to determine the winner of a competition.
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