债务要么产生于契约，要么产生于侵权行为。
"We're going on a bear hunt. We're going to catch a big one. What a beautiful day! We're not scared."
I have always considered that the true test of a machine is its practical utility in the hands of the common laborer.
煤炭企业要主动适应能源结构调整，加快转型升级。
The truth is rarely pure and never simple.
My house is my refuge, an emotional piece of architecture, not a cold piece of convenience.
Beauty is not about perfection, it's about authenticity and confidence.