In particular, making schema changes or adding indexes to a database with more than 10-20 million rows completely locks the database for hours at a time.
尤其是有一两千万行数据的时候，每次修改模式、往数据库中添加索引都会数小时完全锁定数据库。
For it to be held that way, rather than getting more and more curved over time, the amount of matter and energy it contains must be at a particular, critical density.
而根据这个状态，不是随时间而越来越弯曲，它所拥有的物质与能量必须在一个临界的，特别的密度。
You should remain conscious of time limits during the test, and you should move on rather than spending too much time on a particular question to which you are unable to find the answer.
在考试中要有充分的时间意识。你们应该不断地往下做题而不是花太多时间在你找不到答案的某一具体问题上。
You should remain conscious of time limits during the test, and you should move on rather than spending too much time on a particular question to which you are unable to find the answer.
在考试中要有充分的时间意识。你们应该不断地往下做题而不是花太多时间在你找不到答案的某一具体问题上。
The U-M analysis supports previous findings that individuals who had a short allele on a particular area the serotonin gene had a harder time bouncing back from trauma than those with long alleles.
密歇根大学分析认为之前的研究是正确的：在血清素基因的某一特定位置有一等位基因，而这等位基因越短的人往往越不容易从情感创伤中走出来。
If you ever find more than one program using a particular functionality, it's time to put it in a module.
如果发现有多个程序使用一个特定函数，则需要将此函数放入模块。
Noticing the sun should be in a position at a particular time, but seems to have shifted more to the NW than ever at this time.
在特定的时刻太阳应当是在某个位置的，但与以往这个时候相比，看来它已经更多地朝西北方向移动了。
Noticing the sun should be in a position at a particular time, but seems to have shifted more to the NW than ever at this time.
在特定的时刻太阳应当是在某个位置的，但与以往这个时候相比，看来它已经更多地朝西北方向移动了。
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