这一级别可用于如下情况，环境传感器数据，丢失一次读记录无所谓，因为不久后还会有第二次发送。
This level could be used, for example, with ambient sensor data where it does not matter if an individual reading is lost as the next one will be published soon after.
研究人员在第二次实验中采用了更精确的方法——发送较短的中微子束，并且将发送时间用较长的时间间隔开来。
The researchers claim to have used a more accurate method for the second trial, by sending shorter bunches of the tiny neutrinos with larger gaps in between.
当我进行第二次请求时，不知何故我被认为是发送第一个请求的同一人，并检索到我与第一个请求一起发送的信息。
When I made my second request, I was somehow identified as the same person who made the first request, and the information I sent along with the first request was retrieved.
因此，第一次发送的HTTP请求与第二次所发送的有所不同。
Therefore, the HTTP requests sent the first time can differ from those sent the second time.
如果需要接收方答复，那么第二次使用该表单时将发送两个参数to和unid。
The second time, if the recipient should reply, two parameters are sent: to and unid.
第二次输出start消息，立即返回对suspend的第二次调用，并且发送end消息进行响应。
The start message is output a second time, the second call to suspend returns immediately, and the end message is sent in response.
如果你发送了一份带有错误的简历，那你就不会再有第二次机会来给别人留下好的印象。
You will not get a second chance to create a good impression if you send out a resume that includes errors.
当一个对象不能正常及时处理发送过来的消息时会导致异常，runtime系统在发生异常之前提供了第二次机会处理消息的机会。
Sending a message to an object that does not handle that message is an error. However, before announcing the error, the runtime system gives the receiving object a second chance to handle the message.
当一个对象不能正常及时处理发送过来的消息时会导致异常，runtime系统在发生异常之前提供了第二次机会处理消息的机会。
Sending a message to an object that does not handle that message is an error. However, before announcing the error, the runtime system gives the receiving object a second chance to handle the message.
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