The rate constants of radical and electrophilic addition to alkenes are dominated by different factors.烯烃的自由基加成和亲电加成速率受不同的因素控制.These should be four undetermined constants in the displacement function.位移函数中应有四个未定常数.Some w...
我盯着那个人看，视线无法移开。I stared at the man, couldn't tear my eyes away.她马上将目光移开，低头盯着自己的手。She quickly looked away and stared down at her hands.他避免任何眼神接触，一有人靠近就把目光迅速移开。He avoids any eye contact, quickly averting his gaze when...