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。
Hi! You guys keep talking so loudly that I have to speak at the top my voice!
哎!你们一直这样大声讲话,我都不得不扯着嗓子说话了。