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 waved desperately to his companion, who had been water skiing for the last fifteen minutes.
他绝望地向他的伙伴挥手,他的伙伴在过去的15分钟里一直在滑水。