You know that the period of availability of your ticket is only a days.

您知道，您的客票有效期只有a天。

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Service of credits will be given if uptime availability is not guaranteed after a specified period of time with the following exceptions.

如果在一段规定时期之后不再保证正常运行时间有效性，那么将提供信用服务，以下情况除外。

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It also includes the sustainment and the maintenance of the installation for a period of 18 years, with guaranteed levels of operational availability of 98% for the radar and its infrastructure.

合同还包括了该雷达18年使用周期内的支持和维护，确保该雷达与有关基础设施在使用周期内至少拥有98%的作战能力。

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And, by the way, whether the rules work or not, they'll have an effect on the price and availability of credit - probably raising the price and shrinking the availability, for the period of implementation (at least) and possibly for longer.

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Company executives expressed hope that oil directed activity and the presence of large international players and credit availability will sustain the North American cycle over a long period of time.

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However, with the advent of numerous competitors and near-universal availability of GPS devices in phones, Garmin is now facing an extremely rough period.

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