在记入您账户的借方之前，我们总是会就发生变动的数额书面通知您。We will always confirm the revised amount to you in writing before debiting your account.产品成本降低变动的经济可行性,总是决定于对产品的继续需求情况.The economic feasibility of cost - reducing changes will always depen...

“变动的”的英语可以翻译为：fluctuant，oscillatory，[经] variable，up-and-down ...