When new or difficult material is presented, almost all listeners are faced with a challenge, because human's speech lacks the stability and permanence of the printed word.
Some of the solid material it brings up may come from a so-called diamond-stability field, where conditions of pressure and temperature are conducive to the formation of diamonds.
它所带出的一些固体物质可能来自所谓的钻石稳定场，那里的压力和温度条件有利于钻石的形成。
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When new or difficult material is presented, almost all listeners are faced with a challenge because human speech lacks the stability and permanence of the printed word.