RESULTS To build effective system and decrease abrasion and uselessness of oral apparatus.
结果建立了口腔器械有效的消毒与管理措施，器械的丢失与损坏明显减少。
Most elder people have bad feeling , for example, loneliness, senility and uselessness, all most elder people have bad health consciousness.
老年人大部分有负性情绪，主要是孤独感、衰老感、忧郁感。 绝大部分老人健康保健意识差。
Chuang Tzu sensed that they would fall into quarrel if the argument went on, so he diverted the topic to quit the argument about usefulness and uselessness.
庄子知道再辩下去两人就要翻脸了，于是将话题岔开，结束了这场有用与无用的辩论。
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