这些做法对于植物的能育性常有损害,这一点是无可置疑的.That these processes are often injurious to the fertility of a plant cannot be doubted.这样的杂交随时都会发现有合理的间型能育性.Such crosses are found to be reasonably interfertile....
Virginia was a perfectionist. She was just not prepared to settle for anything mediocre.弗吉尼娅是个完美主义者，她根本不愿意拿任何普普通通毫无特色的东西将就。Only lazybones and mediocre persons could hanker after the days of messing together.只有懒汉庸才才会留恋那大锅...
the bongs of Big Ben大本钟的嘡嘡声It ( Big Ben ) is not only of immense size, but it extremely accurate as well.它 ( 指“大本钟” ) 不仅巨大而且报时也准确.The Big Ben has ticked away the time accurately for many years.大本钟多年来都在准确地走时....
We heard soldiers tramping by.我们听见士兵们踏步而去.I could just make out a tall, pale, shadowy figure tramping through the undergrowth...我只依稀看见一个高个的模糊身影穿过了矮树丛。They were tramping grapes for wine.他们在踩葡萄酿酒.She spent all day yesterda...
根据协调性的要求,梁在B点的挠度应为零.Compatibility will require that the girder deflection at B be zero.结构的过大挠度可以引起覆盖面的巨大破坏.Excessive deflection in a structure may cause considerable damage to cladding.我们可以用平面压力的分析方法来确立梁中间面的挠度.We may use...