Dozens of wildfires are spreading near the Georgia-North Carolina border with smoke so thick that residents have been advised to wear masks if they're outdoors.
Evacuations have been necessary in some parts of Georgia, North Carolina and Tennessee.
One of the largest ongoing fires has burned 13,300 acres in the Cohutta Wilderness Area of the northern Georgia mountains.
That fire is believed to have been ignited by a lightning strike, but most of the fires in the region are suspected acts of arson.
More than 1,000 firefighters are now working to battle the blazes.
I kept the engine running because it might be necessary to leave fast.
We will do whatever is necessary to stop them.
Wastage was no doubt a necessary consequence of war.
Scientific work is differentiated from art by its necessary connection with the idea of progress.
If necessary, the airship can stay up there for days to keep out of danger.
The army needs men who are willing to fight, when necessary.
The bombs ignited a fire which destroyed some 60 houses.
炸弹引发的大火烧毁了大约 60 栋房屋。
The blasts were caused by pockets of methane gas that ignited.
There was one teacher who really ignited my interest in words.
The recent fighting in the area could ignite regional passions far beyond the borders.