Cyclopropane rings are included within larger systems, such as triterpenes.三元环包含在较大的环系统中,像三萜类中.Under the optimum condition the yield of isopropyl cyclopropane carboxylate is 92 %.在最佳反应条件下,环丙烷羧酸异丙酯的产率达92%.Cyclopropane car...
The best bit was walking along the glacier.最好的部分就是沿着冰川走。The upper surface of glacier is riven by crevasses.冰川的上表面已裂成冰隙.The glacier scooped a canyon out of rocks.冰河在礁石中冲出了一条河谷....
Alex jumped up so violently that he overturned his glass of sherry.亚历克斯一下子暴跳起来，结果把他那杯雪利酒都打翻了。Sherry is half as strong again as table wine.雪利酒比佐餐酒酒劲强一半。Cook pieces of succulent chicken with ample garlic and a little sherr...