只有在起飞、着陆或天气不好不能平稳飞行时才扣上。
Only on take-off, landing and when it is rough flying weather.
例句逃逸塔启动的时候能够使飞船双翼打开并且平稳飞行。
When the escape tower is activated, the wings will unfold, helping the escape craft to fly stably.
本玩具直升飞机机翼结构较好的解决了玩具 直升飞机平稳飞行问题。
The wing structure of the toy helicopter better solves the problem of stable flying of the toy helicopter.
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