它或许是我枕边的，温润了许多年的，那块鹅卵石，不是蓝色的，而是纯黑的，盛载着我的忧伤。
It is perhaps my pillow, and moist for many years, that piece of pebbles, not blue, but a true black, and loaded with my sorrow.
本文提出用盛有纯丙酮的丙酮收集瓶测定丙酮收集量的概念及方法，并建立了相应的数学模型。
This paper gives the concept and method of testing acetone escape quantity with acetone-collecting bottle which contains pure acetone, and has built up the corresponding mathematical models.
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