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。
If this facilitates forgery, it is the bank which will lose, not the customer.
如果因这种作法出现了伪造的话,受损失的将不是储户,而是银行。