| 词汇 | on demand |
| 释义 | on demand : when needed or wanted一经要求；需要时 Help is available 24 hours a day on demand.全天24小时及时提供援助。 The debt is payable on demand. [=it must be paid whenever the person who is owed the money wants it]借款一经索要须立即偿还。 — see also on-demand demand |
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