texts: Is that a no-smoking sign ? </s> <s> Yes , it is . As you know , some of the materials we use are highly-flammable so we have a very strict non-smoking policy in the factory . </s> <s> What does that sign mean ?
labels: It means there must be no naked flames or sparks anywhere near flammable materials . If the materials ignite , it could cause a serious fire and the fumes they give off can be very dangerous if you inhale them .