Tremain's novel is altogether jauntier, more various and energetic than these quotations imply.与这些引文给人的印象相比，特里曼的小说总的来说更加充满自信、富于变化，也更有活力。ROSE TREMAIN is a difficult pigeonhole.萝丝?崔梅是一位难以定性的作家....
氨基酸是弱酸和弱碱, 因此, 它们是很好的缓冲剂.Amino acids are weak acids and weak bases, therefore, they are excellent buffering agents.缓冲剂可以像烤面包的苏打粉那样使用,它们都能够使ph值保持稳定.Buffers can be used like baking soda will help keep ph stable.着重叙述了缓冲剂原理及...