interstellar gas cloud

The contraction of a cool interstellar gas cloud can proceed in a variety of ways .

一个冷的星际气体云的收缩，可以通过许多不同的方式来进行。

The interstellar gas cloud Sagittarius B contains a billion , billion , billion liters of alcohol [ JFrater is planning to move there in the near future ] .

星际气体云射手座B含有十亿的十亿的十亿升的酒精（本站站长计划不久将来要移居该处）。