Our voices echoed in the empty house.我们的声音在空屋里回荡。the piping voices of children.孩子们的尖叫声We hear the silver voices of heroic bugles.我们听到了那清亮的号角.incorporeal voices无形的声音The electricians have performed wonders in recording the...
A butterfly is produced by metamorphosis from a caterpillar.蝴蝶是由毛虫脱胎变成的.the metamorphosis of a caterpillar into a butterfly从毛毛虫到蝴蝶的蜕变The caterpillar was transformed into a butterfly.毛毛虫变成了蝴蝶。The results showed that the J...
This complex reaction is characterized by a keto - enol tautomerism equilibrium and ester exchange reaction.此螯合反应是由酮一烯醇互变异构平衡过程和酯交换反应组成.We have already met one series of specific enol equivalents.我们已经遇到过一系列有特效的烯醇等当物.Keto...
提供更多的服务: 客户不再仅仅要求 短期 提供单一的产品或物品.Providing additional services: Customers no longer just require the short - term provision of single products or articles.空中补给线当地面交通断绝时运送军队、''.'乘客'.''或物品的飞机.A...
Thermal analysis of ( PCN ) and ( PA ) indicated t - hat the ( Teo ) data by DTA testing for ( PCN ) and ( PA ) were , 453 and 426 respectively.( PCN ) 和 ( PA ) 的热分析 ( Teo ) 值分别为453和426 ( DTA ).Thepowder is characterized...
Very soon we'll see the rate of cardiovascular disease among teenagers rising. "很快我们就会看到,青少年心血管疾病的发病率出现上升. ”Carbon monoxide is definitely capable of impairing cardiovascular function.一氧化碳确实能损害心血管机能.The cardiovascula...