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%.
Strangely enough, the last thing he thought of was his beloved Tanya.说来也怪，他最后想到的才是他心爱的塔尼娅。Tanya's hands rippled over the keyboard.塔尼娅的双手在琴键上翻飞。Martin helped Tanya over the rail.马丁扶着塔尼娅越过栏杆。...
Those involved had performed acts unbecoming of university students.那些参与者的所作所为有失大学生的体面。It is utterly unbecoming of him to do such a thing.干这种事与他的身分极不相称....the unbecoming dress hurriedly stitched from cheap cloth.用廉价布料匆匆缝...