Aspirin is synthesized through O - acylating reaction from acid and anhydride acid with anhydrous carbonate as catalyst.以水杨酸和乙酸酐为原料,采用无水碳酸钠作为催化剂经O - 酰化反应合成了阿司匹林.One advisable way is to synthesize NFM acylating morpholine...
A trickle of refugees began to flee the country.难民开始三五成群地陆续逃离该国。For an instant, Catherine was tempted to flee.有那么一会儿，凯瑟琳很想逃跑。Many refugees have been forced to flee their homeland.很多难民被迫逃离了祖国。...
My favorite song is on the jukebox.自动点唱机在放我最喜欢的歌。The waiters mime to records playing on the jukebox.侍者们配合自动唱机里播放的唱片对口型假唱。A hillbilly love song was on the jukebox.自动唱机正在放一张乡间情歌唱片.I learnt to jive there when they got the j...
This cream moisturises and repairs in one.这种护肤霜兼具滋润和修复功能。She moisturises her hands with cream.她在手上擦些润肤乳膏,以增加皮肤的水分.The facility says the beer bath moisturises and cleanses the skin.据介绍,洗啤酒浴能够清洁并滋润肌肤....
There has been a very mixed reaction to the decision.对于这个决定的反应非常不一致。Adolescent suicide is rarely an impulsive reaction to immediate distress.青少年自杀很少是由于突然发生不幸而作出的冲动反应。My general reaction to this news might be summed up as...
Plants had gradually evolved along diverging and converging pathways.植物是沿着趋异和趋同两种途径逐渐演化的.With member - country bond yields now diverging,'it's a fragmented set of markets.但随着成员国债券收益率之差扩大, 市场已经分割开来.Finally it gi...
Having arrived unannounced for supper, we had to take potluck.由于没有提前通知我们要来吃晚饭，我们只能吃些家常便饭。Come along and take potluck.请来吃顿家常便饭.The scheduled flight was canceled and passengers had to take potluck on the other airlines.原定航...
The frames are secured by horizontal rails to the back wall.框架用横杆牢牢固定在后墙上。Do not raise your left arm above the horizontal.左臂不要举过水平高度。He shifted his position from the horizontal.他从水平姿势变换成其他姿势。...