These incidents suggest the peace in Northern Ireland is still brittle.这些事件表明北爱尔兰的和平仍然很脆弱。Word has been spreading fast of the incidents on the streets.有关街头骚乱的消息迅速传播开来。Incidents of this type cause irreparable damage to re...
研究了偕二金属有机试剂3与氯化三烷基锡和碘的非对映选择性反应.The diastereoselective reactions of organogembismetallic reagent 3 with trialkyl tin chloride and iodine were studied....