In a thread-safe program, only one writing thread can modify the variable; other threads can read the up-to-date value by declaring the variable volatile.
在一个线程安全的程序中，只有一个写线程能够修改这个变量；而其他的线程则可以读取volatile声明变量的最新值。
Only 16.35% in the negative framing chose the safe program. A chi-square test revealed a significant difference.
负面框架组的被试，只有16.35%选择保守方案，差异有统计学意义。
Only 16.35% in the negative framing chose the safe program. A chi-square test revealed a significant difference.
负面框架组的被试，只有16.35%选择保守方案，差异有统计学意义。
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