经过充分切刻的 “ 光彩夺目 ” 的钻石有五十八个小平面.A fully cut'brilliant'diamond has 58 facets.通过环氧化和氧化就得到外消旋的含十八个碳的昆虫返动激素.Epoxidation and oxidation gave the racemic C 18 - juvenile hormone.十八个月来这样的报告都已听腻了.Such reports had been rout...