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