单词 unpaid invoice 例句 DEFINITIVE EXAMPLES 权威例句〔relieve〕A part-time bookkeeper will relieve you of the burden of chasing unpaid invoices and paying bills.雇一个兼职会计将使你摆脱追讨未付单据和支付账单的负担。柯林斯高阶〔relieve〕A part-time bookk...