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。
But people who are cut off not only from foreign tourists, but even from their own countrymen can be hostile to travellers.
但是,那些不但与外国旅游者隔绝,而且与本国同胞隔绝的人们有可能对游客抱有敌意。