adj.以前的，从前的，一度的

I need to buy a one-time use camera for the underwater photoshoot.
我需要为水下拍摄买一台一次性使用的相机。
The app requires a one-time registration fee of $5.
这款应用需要支付一次性的注册费5美元。
She only attends the annual conference as a one-time event.
她只参加了一次年度会议作为一个偶然的活动。
We're offering a limited time, one-time discount of 20% off your first purchase.
我们正在提供一个限时的一次性优惠，首次购买可享受8折优惠。
He decided to make a one-time donation to support the charity's cause.
他决定做一次性的捐款来支持慈善事业。
This promotion is valid for new customers only and applies to their first order as a one-time offer.
此促销仅适用于新客户，并且作为一次性优惠应用于他们的首次订单。
The software license is valid for one year, after which you'll need to renew it for continued use.
软件许可证有效期为一年，之后你需要续费以继续使用。
The hotel offers a one-time complimentary shuttle service to guests arriving at the airport.
酒店为从机场抵达的客人提供一次免费接送服务。
She made a one-time investment in the stock market and saw significant returns.
她在股市做了一次投资，看到了显著的回报。
The museum allows visitors to borrow an audio guide free of charge for a one-time use during their visit.
博物馆允许参观者在其参观期间免费借用一次音频指南。