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...
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...
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....