The US air Force purchased its first MERLIN bird radar system in 2003 and has installed six systems at US air bases and ranges to date.
美空军在2003年购买了第一套MERLIN鸟击雷达系统，并安装了在美国6个空军基地。
You need to activate Rational Performance Tester with a purchased license key after the expiration date to continue using it.
在有效期到期后，您需要购买一个商业证书密钥来激活RationalPerformance Tester才能继续使用它。
To this date, he hasn't purchased anything I've recommended.
至今，他仍没有买我建议的任何一样。
But when bonds are purchased between interest dates, the purchaser pays the market price for the bond plus the interest accrued since the last interest payment date.
当债券在付息日之间购入时，购买人支付的价格是债券的市价加上自上一个付息日起应计的利息。
The refund should BE made not later than 30 days after expiry date of the ticket and only in the place where the ticket has BEen purchased.
旅客退票最迟应在客票有效期满后三十天内并在原购票地点办理。
The refund should BE made not later than 30 days after expiry date of the ticket and only in the place where the ticket has BEen purchased.
旅客退票最迟应在客票有效期满后三十天内并在原购票地点办理。
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