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。
You may pick them up in utter exhaustion, if wind over the sea has driven them to a long journey.
如果海风驱使它们飞行很长距离,你可以捡到一些因筋疲力尽而摔下来的鹧鸪。