此外，每个收集循环会返回一个不同的自由块模式。
Further, each collection cycle can return a different pattern of free chunks.
把receive块放在一个接近无限的循环中。
在JSON数据块前面放置一个无限while循环。
Blue提供单一的循环机制，包含于代码块之内。
Blue provides a single mechanism for looping, which is contained within a code block.
for 循环，它对一个语句块执行一定次数。
The for loop, which executes a block of statements a certain number of times
只有不断循环才能找到它，块的结束部分仍然在块开始的1上。
Continue the loop until you find it. BlockEnd should still be 1 above BlockBegin.
只有不断循环才能找到它，块的结束部分仍然在块开始的1上。
Continue the loop until you find it. BlockEnd should still be 1 above BlockBegin.
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