异菸肼是广泛用于治疗结核的药物.The drug isoniazid is widely used in the treatment of tuberculosis.这种物质很容易由甲醛和肼反应而得到.The material is readily prepared by reaction of formaldehyde and hydrazine.这种燃料的例子是一甲肼和二硼烷.Examples of such fuels are m...
...perhaps the foremost realist painter of our times.也许是我们时代最重要的现实主义画家We are optimist and realist.我们是乐观主义者,又是现实主义者.I see myself not as a cynic but as a realist...我觉得自己不是一个愤世嫉俗的人，而是一个现实主义者。More extreme attitudes are somet...