Asymmetric 1, 3 - dipolar cycloaddition can be strongly catalyzed by chiral oxazaborolidines.手性唑硼烷酮能够催化不对称1, 3偶极加成反应并取得很好的效果.The cycloaddition itself is the slow step.环化作用本身是慢的一步....
He pretended to fall over.他假装跌倒.When they fall over, they slide a long way down the hill!当他们落下时, 就会沿着山坡滑行很长的一段路.They might bump into things bomb intersects or fall over objects.可能会撞上一些东西,或者是在某些东西上面摔倒....
他被诬告犯有抢劫罪.He was falsely charged with robbery.谁都知道他被诬告了.Everybody knows he was wrongly accused.他的几位同事诬告他,使他丟掉了工作.Several of his colleagues trumped up a complaint to get him removed from the job....
a remarkably resilient woman有非凡适应力的女子Against heavily armored opponents or highly resilient opponents as Giants, the Glaive's damage output is necessary.在对付重价的敌人或者像巨人那样高防护的敌人时, 你需要大刀的伤害输出.George Fraser was clearly a ...