The captain turned out the "no smoking" signs.

机长关掉了“禁止吸烟”标志灯。

《柯林斯英汉双解大词典》

He ignored all the 'No Smoking' signs and lit up a cigarette.

他无视所有“禁止吸烟”的警示，点了香烟。

《牛津词典》

Passengers are reminded (that) no smoking is allowed on this train.

旅客们请注意，本次列车禁止吸烟。

《牛津词典》

The researchers found no considerable change in the number of heart attacks in areas near Pueblo without smoking bans.

VOA: special.2009.01.07

"And I also know that kids today don't just start smoking for no reason.

VOA: standard.2009.06.22

"There was no single piece of intelligence, a 'smoking gun' if you will, that said that Mr.Abdulmutallab was going to carry out his attack against that aircraft,"

VOA: standard.2010.01.03

John Brennan said Sunday a couple of times that there was no smoking gun.

WHITEHOUSE: Press Briefing

And there is no smoking gun proving that Iraq has weapons of mass destruction.

CNN: Jane Arraf: Iraqi threats difficult to assess

But there is no smoking gun in the report, only innuendo sold as something more definitive.

FORBES: Huawei, ZTE and the Slippery Slope of Excusing Protectionism on National Security Grounds