Hot drinks are quite dangerous in weightless conditions .

在失重的状态下，热饮料是很危险的。

Gentlemen , welcome to our weightless environmental training facility .

各位，欢迎光临无重力环境训练区。

A person becomes weightless in outer space .

在外太空人变得无重量。

They may be empty and weightless and maybe .

他们可能是空的，轻飘飘的，也许。

We feel weightless when the elevator descends .

当电梯下降时，我们会感到失重。