1.And if you stir up a hornet's nest, you create trouble or problems.
stir up 激起;煽动;搅拌;唤起
Before painting, you should stir up the paint a bit.
漆油漆前,你得把油漆搅拌一下 。
They saw first a cloud of dust and then the car that was stirring it up.
他们先是看到一团尘土,接着就看到扬起尘土的那辆车 。