但是第一次跳伞我要求你一定是要在，最低9000英尺以上的，因为这个也是美国国家跳伞协会USPA，认定的安全跳伞高度。

But for the first time, I asked you to be at least 9000 feet above, because this is also the national parachute Association USPA, identified as the height of the safety parachute.

youdao

这是最低的要求了，50000元会保证更安全的飞行高度。

That is the barest minimum, but $50,000 provides a much safer flying altitude.

youdao

这是最低的要求了，50000元会保证更安全的飞行高度。

That is the barest minimum, but $50,000 provides a much safer flying altitude.

youdao