Levocetirizine Dihydrochloride was prepared from benzoyl chloride by acidylation, hydrogenation, cyclization with an overall yield of 8.05 %.以苯甲酰氯为原料,经酰化, 还原, 环合等反应合成左旋西替利嗪盐酸盐,反应总收率为8.05%....
There is only your own pair of wings and the pathless sky.这里只有你自己的一双翅翼和无路的天空.Her virtue is like a pathless desert.她的品德象一片人迹难到的沙漠.The pathless ground threw up leaves and stones , swirls of dust rose and settled.不是等答案,而是等着...
I took the phone, and she went discreetly into the living room.我拿起了电话，她知趣地进了客厅。I answered the phone and this voice went, "Hello? Is that Alison?"我拿起电话，就听到这个声音：“喂？是艾利森吗？”Simon finished dialing and clamped the phone to his...
Could I begin with a few formalities?请允许我开场先讲几句套话。to go through all the formalities necessary in order to get a gun licence办理取得持枪执照的全部必要手续All the customs formalities have been attended to.一切海关手续都办妥了....