她见到了里恰尔迪夫妇，他们对她非常友好。She met Mr and Mrs Ricciardi, who were very nice to her.同越南恢复友好关系的迹象越来越明显了。There have been growing signs of a ra-pprochement with Vietnam.发言人说信函的语气非常友好。The spokesman said the tone of the letter was ve...
A coarser grade of iron will lower the yield of ferrocene.粗粒的铁将降低二茂铁的产量.These receptors include bridged dipyrrole ansa - ferrocene, bipyrrole - based catenanes , guanidinium - appended amidopyrroles, 2,5 - diamidopyrrole...