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%.
His passive attitude made things easier for me...他顺从的态度让我做起事来要轻松些。an irreverent attitude to tradition不把传统放在眼里的态度...the lackadaisical attitude of a number of the principal players.几名主力队员的懒散态度His attitude is compassionate ...
They tried to get the harpoon into the ray before the sting tail came lashing over to retaliate...他们试图把鱼叉刺进鳐鱼体内，以防它猛摆那蜇人的尾巴报复。His tongue has a nasty sting , ie He says hurtful things.他的舌头能蜇人(说话伤人).Remove the bee sting wi...