They've promised to keep both we quality and the quantity of the 300 bicycles in conformity with the contract stipulations.
他们已承诺那300辆自行车的质量和数量一定与合同规定相吻合。
he said. But I don't have many friends, and I don't enjoy myself very much. I don't know why!
他说,“但是我没有很多朋友,我过得不很愉快。我不懂为什么!”