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 explained that his diet was so strict that he had to reward himself occasionally.
他解释说,他的饮食控制得太严格了,以致不得不偶尔奖赏自己一下。