我访问了亚洲和非洲仍然流行脊髓灰质炎的四个国家，以亲眼观察正在作出的巨大努力，而这些努力往往是在极其困难的条件下作出的。
I have visited each of the four remaining polio-endemic countries, in Asia and Africa, to observe first-hand the tremendous efforts being undertaken, often under very challenging conditions.
在后续的医生访问和检验中，观察等待成本只有几千美元。
Watchful waiting costs just a few thousand dollars, in follow-up doctor visits and tests.
DBA必须知道如何通过观察EXPLAIN结果来检查和定位访问计划中的问题。
It is important for a DBA to understand how to look at EXPLAIN output to detect and locate problems in the access plan.
如果你有一个年轻的兄弟或姐妹，侄女和侄子，问他是否能访问他们的学校或幼儿园，观察孩子们喜欢玩什么样子的玩具，以及他们如何玩。
If you have a young brother or sister, niece or nephew, ask if you can visit their school or nursery to observe what toys children like playing with and how they play with them.
特定的CPU或者线程在观察自己的内存访问情况的时候，其观察到的顺序和program order一致。
A given CPU or thread must see all of its own loads and stores as if they had occurred in program order.
特定的CPU或者线程在观察自己的内存访问情况的时候，其观察到的顺序和program order一致。
A given CPU or thread must see all of its own loads and stores as if they had occurred in program order.
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