Rates or on the per-use cost (per-use cost: A set fee for the use of a resource that can be in place of, or in addition to, a variable.是什么意思_Rates or on the per-use cost (per-use cost: A set fee for the use of a resource that can be in place of, or in addition to, a variable.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句