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...
On the mantelpiece are a pair of bronze Ming vases.壁炉台上是一对明代的青铜花瓶。She won bronze for Great Britain in the European Championships.她在欧洲锦标赛上为英国队赢得铜牌。Her hair shone bronze and gold.她的头发泛着黄褐色的金光。...
The cold has made already substandard living conditions even worse.寒冷使得已经较差的生活环境变得更糟糕。Too many families are still living in substandard housing.仍有太多家庭居住条件达不到标准.The reputation of the firm was blown upon for passing substa...