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...
He is a political pragmatist, not an idealist.他是政治上的实用主义者，而不是理想主义者。He is not such an idealist that he cannot see the problems.他并非看不见问题的理想主义者。Metaphysics is part and parcel of the idealist world outlook.形而上学是唯心主义世界观的组成部分....
He was financially involved with a villain.他在经济上与一个恶棍混在了一起。The villain of the novel is polished off in the last chapter but one.小说中的那个坏蛋在书中倒数第二章被干掉了。He is a black villain.他是一个无可救药的恶棍。At first glance, the spotlight - hogg...