flight course 航线
- For minute variations change the course the course of flight.
因为细微的变化都会改变飞船的航向。 - He was, of course, the first person to succeed in such a flight.
当然,他是头一个成功创下这种飞行的人。 - In the course of evolution, some birds have lost the power of flight.
在演化过程中一些鸟失去了飞行的能力。
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