It may not be a weather balloon.

可能不是气象气球。

Be that a weather balloon?

那是气象气球吗？

Is that a weather balloon?

那是气象气球吗？

Raise the weather balloon and await evacuation.

到气象气球处等候撤退。

They may have seen a weather balloon, a satellite, a meteor or something.

他们看到的可能是气象探测气球、地球卫星、流星或是其他东西。