The true way is along a rope that is not stretched at any great height but just above the ground. It seems more designed to make people stumble than to be walked upon.
Green and low-carbon transformation is an inevitable choice for the petroleum industry. While ensuring energy supply, we must actively promote clean energy development.
艺术最美妙的地方在于它可以不用语言交流。
柠檬问题发生的原因是卖家比买家更了解产品，从而导致市场失灵。