Checking is easy but expensive (you have to make an extra call to SimpleDB, which is slow since it's a whole HTTP round trip plus the processing time on Amazon's side).
要进行检查也很简单,但是需要付出开销(您必须额外调用SimpleDB,而调用会很慢,因为需要完整的HTTP往返以及amazon端的处理时间)。
Can I call back yesterday's wounds and make them whole?
我能扶平昨日的创伤吗?
Can I call back yesterday's wound and make them whole?
我能扶平昨日的创伤吗?
Can I call back yesterday's wound and make them whole?
我能扶平昨日的创伤吗?
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