一次性付款
先理解核心含义，再看它在真实句子里的用法。
一次性付款
a single payment made at one time, not in installments or recurring
The consultant received a one-time payment for the project, rather than ongoing royalties.
这位顾问收到了一次性付款,而不是持续的版税。
一次性付款
a single payment made at one time, not in installments or recurring
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Dictionary facts from AI_SUPPLEMENT.