Sodium ethylate was used as catalyst in Baker - Venkataraman of cyclization, and all factors were studied.环合反应采用乙醇钠作为Baker-Venkataraman重排反应的催化剂, 研究了影响反应的各个因素....
冬天快到了, 我们应该给走廊装玻璃了.Since winter is coming, we should glaze in a porch.我知道怎么给窗装玻璃.I know how to glaze a window.那位装玻璃工人在窗户安装一块新的玻璃片.The glazier fitted a new pane of glass in the window....
His ship had sailed like a dream.他的船行驶十分顺畅。Fire is the life force and animator which enlivens the dream.火元素是生命力和赋予生气者,它赋予了梦想生命.a portentous dream/ sign不祥的梦/征兆Visiting Angkor was the fulfilment of a childhood dream.游览吴哥实现...