烯空气跟空气十分近似.Olefin gas closely approximates air.所有的主要难点都涌现在烯酮 ( 1 ) 的合成中.All the chief difficulties crop up in the synthesis of the enone ( 1 ).某碳氢化合物已知可能是烯烃或是烷烃.A hydrocarbon was known to be either an alkene or alkane....
members of the aristocracy贵族成员The highest - ranking members of the Spanish aristocracy are the grandees.西班牙贵族中爵位最高的成员乃是大公.The trader and catcher may yet be a - mong our aristocracy.黑奴贩子和黑奴追捕者们,恐怕还将侧身于我们的达官贵人之列呢....
明仁天皇在1959年打破皇室传统,娶了一位平民女子为妻。In 1959, Akihito broke with imperial tradition by marrying a commoner.为富不仁,为仁不富.The rich are not benevolent ; the benevolent are not rich.这些核中有仁.These stones contain kernels....