But if a polite complaint does not achieve the expected result, the consumer can go a step further.
但是如果礼貌的投诉达不到期望的效果，消费者还可以采取更进一步的措施。
If the temperature or improper operation, can not achieve the expected purpose, but may have the opposite result.
如果炉温或操作不当，不仅达不到预期目的，反而可能产生相反的结果。
Due to the limitation of traditional synchronous event object, must combine with other data structure to achieve the expected target, but this will result in low efficiency and possess more memory.
传统的事件同步对象由于其自身的局限性，在实际应用中不得不结合其他数据结构以达到预期要求。
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