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。
When it did so, it sent sparks down to the ground and these immediately started a fire.
当它这样做时,把火花送到了地面,这些火花立刻引起了一场大火。