20世纪60年代建造的高低不一的公寓楼群正在逐渐破损坍塌。The high and low-rise apartment blocks built in the 1960s are crumbling.墙坍塌了，露出砌在里面的维多利亚时代的壁炉。The wall caved in to reveal a blocked-up Victorian fireplace.那座房子太破旧，都开始坍塌了。The house is so old a...
目睹困苦、潦倒的景象，他们感到心里极不舒服。They were sickened by the scenes of misery and degradation they found.他们在最困苦时仍处之泰然,连捉住他们的人都深有感触.The philosophy of them during their worst sufferings impressed even their captors.烈火试真金, 困苦练壮士.The fir...
Application of samarium diiodide in mediating intramolecular cyclization reactions was reviewed.综述了二碘化钐在分子内环化反应中的应用.Sodium ethylate was used as catalyst in Baker - Venkataraman of cyclization, and all factors were studie...