The carbon is electrophilic centre.碳是亲电的中心.It will become deepen to the students'recognization in mechanism of Aryl electrophilic substitution.这些问题的讨论将深化学生对芳烃亲电取代反应机理的认识.The rate constants of radical and electrophil...
廷斯利博士在棋盘上还有5枚棋子，对手钦诺克还有4枚。Dr Tinsley had five pieces on the board against Chinook's four.他们拿出棋盘把棋子摆好.They got out the chessboard and arranged the pieces.在国际象棋中，一般来说从棋盘任何位置都可以移动大约36步。In chess there are typically abou...
Those electing to smoke will be seated at the rear.那些想吸烟的人将坐在后排。The country is about to take a radical departure by electing a woman as its new president.该国将发生重大转变，选举一位女性担任新总统。He proposes electing Franc to appoint a dire...
She undressed and put her wet clothes in a neat pile in the corner.她脱掉衣服，把湿衣服整齐地码成一堆放在角落里。The writing on the back of the card was cramped but scrupulously neat...这张卡片的背面写满了密密麻麻但却十分工整的字。The neighbours' gardens were t...