Waiting for a gas cloud to stumble into their vicinity isn't a very efficient means of hunting.

守株待兔地等待气体云闯入其领地可不是有效率的捕猎方式。

youdao

Known by the popular name of the Dumbbell Nebula, the beautifully symmetric interstellar gas cloud is over 2.5 light-years across and about 1,200 light-years away in the constellation Vulpecula.

这个在狐狸座相距1200光年，直径2.5光年的美丽而对称的星际气体云有个为人熟知的名字——哑铃星云。

youdao

Known by the popular name of the Dumbbell Nebula, the beautifully symmetric interstellar gas cloud is over 2.5 light-years across and about 1, 200 light-years away in the constellation Vulpecula.

这个在狐狸座相距1200光年，直径2.5光年的美丽而对称的星际气体云有个为人熟知的名字——哑铃星云。

youdao

One shows the remains of a dying star four thousand light years away which has thrown off a cloud of glowing hydrogen gas.

VOA: special.2009.09.30

Then, Siegelson said, you could seek refuge there, and wait until the gas cloud moves by.

CNN: gas mask

Emergency officials in southern Kent advised residents "to keep doors and windows closed due to a gas cloud".

BBC: French Lubrizol factory struggles to stop foul gas leak

At the moment the shape of the radio-emitting, cigar-shaped gas cloud at the core of the galaxy is a mystery.

BBC: By BBC News Online Science Editor Dr David Whitehouse