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。
An enterprise has to incur certain costs and expenses in order to stay in business.
一个企业为了继续经营,不得不支出一定的费用和开销。