哈米吉多顿只发生一次，你知道的。
这个事件对于数据集合的每一行都只发生一次。
这些事件并不会只发生一次，但是它们并不频繁。
These events will not be one-time only occurrences, but they will be infrequent.
掌握生命中的每一个机会，因为有些事只发生一次。
Take every chance you get in life, because some things only happen once.
例如，在一年中只发生一次文件丢失，这样的损失可能是可接受的。
A single incident of lost files in a year may be acceptable loss, for instance.
据美国地质调查局资料，这种震级的地震十分罕见，全世界平均每年只发生一次。
According to the United States Geological Survey, earthquakes of that magnitude are rare, occurring worldwide on average once a year.
REOPT ONCE：查询执行中只发生一次查询优化，即在查询第一次执行时。
REOPT once: query optimization occurs once at query execution time, when the query is executed for the first time.
在使用对象池时，分配、初始化、回收和终结只发生一次，从而减少了内存使用和所需的处理时间。
When using an object pool, the allocation, initialization, collection, and finalization only occur once, reducing both the memory usage and the processing time that is required.
最初的乐园只是最原始的行为生发之地，只发生一次，而失乐园是一座新乐园，它将记忆也组合了进来。
The primal paradise is where the primitive takes place, for only once, while the paradise lost is a new paradise that is incorporated with memory.
这两套不同的理论都意味着，适应不同的栖息地生活环境的这一过程只发生了一次。
Both of these scenarios imply that specialization to each niche occurred only once.
一次只尝试放松每个边界约束一个单位，解决修改后的问题，看一下目标函数的优化值发生了什么变化。
Try relaxing the value of each bounded constraint one at a time, solve the modified problem, and see what happens to the optimal value of the objective function.
另外，清醒时，我们往往容易遗忘那些只发生过一次的事，而更乐于记住不断出现的画面。
Besides, in the waking state one is wont to forget rather easily things that have happened only once, and to remember more readily things which occur repeatedly.
如果出卖朋友行为只发生了一次，你可以决定继续友谊，但是要让这个家伙知道这种行为不能接受。
If the doublecross happened only once, you might decide to continue the friendship, but let this guy know that his behavior is unacceptable.
他们一星期只来参加一次审判，每次都发生同样的事情：恐怖侵入他们日常的生活。
They only came to the trial once a week, and each time the same thing happened: the intrusion of horror into daily life.
而且，看起来由猩猩传到人身上只发生过一次。
Moreover, it seems to have made the jump from chimps to people only once.
这种情形发生的最后一次是14年前——而且只发行了10张。
The last time that happened was 14 years ago - and only 10 were issued.
然后，WIP管理员将为该步骤定义2个新的调度：一个重复发生，而另一个则只运行一次。
Then the WIP administrator defined 2 new schedules for that step: one recurring, and the other a one-time only.
增量备份允许只备份自上一次备份以来发生变化的索引和数据页。
Incremental backup allows you to back up only index and data pages that have changed since a previous backup.
在这里，我保证对每个事件过滤逻辑只执行一次，只有当文档中的字符位置发生变化时才会执行。
Here, I made sure that the filter logic is only executed once for each event; it is only executed when the character position within the document has changed.
她似乎一点也不担心下一次海啸的发生，因为她好像再没有什么可以失去了，现在她独自承担着失去亲人的痛苦，包括她的父母，最终她只找到了他们的尸骨。
Why should I be afraid? " but is tormented by the loss of many of her relatives, including her parents, when the wave swept over their coastal village." Syamsiah had found only their bones.
这房子还有一个持续发生的麻烦和一个迄今只出现过一次的问题。
The next little problem with the home is both a repetitive thing and a one timer thus far.
只查看当前的配置源文件无法得到精确的信息，因为应用程序早最后一次载入之后，配置信息可能会发生改变。
Simply looking at the current configuration source does not provide you with accurate information as it may have changed since the application last loaded it.
他说在马西纳号经营的30年间，同样的案例之前只发生过一次。
He said the Mahina has only seen this type of case one other time in its 30 years of operation.
除了发生过几件不幸的事情（包括一次导致一人被咬伤两只狗被咬死的北极熊袭击事件），头两年的航程出奇地顺利。
Despite several mishaps—including a polar bear attack that ended with one crewman bitten and two dogs dead—the first two years of the journey were oddly easy.
在那些远离希克苏鲁伯陨石坑的地点，有证据显示只发生过一次撞击事件。
The sites that are distant from Chicxulub show evidence of only one impact.
前年我们也曾有过一次这样的经历，发生在我们的另一只可卡犬上。
We had gone through this once before last year with another one of our cockers.
只备份自上一次0级备份后发生更改的页面。
Only pages that have changed since the last Level-0-Backup will be backed up.
只备份自上一次0级备份后发生更改的页面。
Only pages that have changed since the last Level-1-Backup will be backed up.
这种情况以前次只发生过两次：一次是在2002年，其后是5年的牛市，另一次是在1988年，接下来更是长达12年的牛市。
The other two times? In 2002, just before a five-year bull market, and 1988, the start of a 12-year bull.
这种情况以前次只发生过两次：一次是在2002年，其后是5年的牛市，另一次是在1988年，接下来更是长达12年的牛市。
The other two times? In 2002, just before a five-year bull market, and 1988, the start of a 12-year bull.
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