They were principally used to catalyze aldol, allylation, Diels - Alder, ene and Friedel - Crafts reactions.它们主要被用来催化Aldol, 烯丙基化, Diels-Alder, Ene和 Friedel -Crafts等反应....
He felt as if a serpent had spat venom into his eyes.他感觉就像有一条蛇朝自己的双眼里喷射了毒液。The Venetian gondola is as free and graceful in its gliding movement as a serpent.威尼斯小艇划起来就象蟒蛇一样洒脱自在....the serpent in the Garden of Eden.伊甸园里的那条...
He started beating me when I was about fifteen but I didn't do anything to provoke him...在我快15岁时他开始打我,可我并没有任何招惹他的举动。His duty was to conciliate the people, not to provoke them...他的职责是安抚那些人,而不是去激怒他们。Premature moves in...
The higher we climbed, the more awe-inspiring the scenery became.我们爬得越高,风景越是让人叹绝。The building was awe-inspiring in size and design.这座建筑的规模和设计气势宏伟。The erupting volcano was an awe - inspiring sight.火山爆发是使人畏惧的景象....