求翻译：按照金额规模划分低风险（合同金额少于25万澳币）、一般风险合同(合同金额超过25万澳币且不超过400万澳币)和高风险合同(合同金额超过400万澳币)。是什么意思？

Accordance with the amount of scale divided into low risk (the contract amount is less than A $ 250,000), the general risks of the contract (contract amount to more than 250,000 Australian dollars and not more than 400 million Australian dollars) and high-risk contract (contract value of more than f

Amounts in accordance with size low risk (contract value less than 250,000 Australian dollars), the General risk contracts (contract value of more than 250,000 Australian dollars and not more than 4 million Australian dollars) and high risk contracts (contract value of over 4 million Australian doll