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...
Shortly afterwards, cuts in defence spending forced the aerospace industry to retrench.不久之后，国防开支的削减迫使航空航天业紧缩开支。British Aerospace has won an order worth 340 million dollars.英国宇航公司已经赢得了3.4亿美元的订单。At stake are more than 20,0...
Has the bank okayed your request for a loan?银行批准你的贷款要求了 吗 ?His ear okayed the sounds as the engine warmed up.他的耳朵听出发动机预热时发出的声音是正常的.They okayed the proposal yesterday.昨天他们批准了这项提案....