穿过地理梯度, 莱文斯预料有分布区不重叠的小种或近群种.Across geographic gradients, Levins expects allopatric races or coenospecies exist.航空磁梯度仪在六十年代中期交付使用.The airborne magnetic gradiometer came into use in the middle 1960 s.这说明水动力条件具有很明显的位能梯度.Thi...
Now is the right time for harvesting.现在正是收割季节.They no longer have to take on large numbers of temporary workers to do the harvesting.他们再也不必雇用大量临时工来收割农作物.Cut the fruit in half and inspect the pips: if they are turning sli...
Modernism was the characteristic expression of the experience of modernity.现代主义是现代经验的典型表现.Modernism became popular in the early part of the 20 th century.现代主义在20世纪初开始流行起来.Held straddles Modernism and Post - Modernism.赫尔德...
射击场被一排排深红色的灯光设备从下面照亮了.The shooting-range is lit from underneath by rows of ruby-red light fittings.一道道灯光照亮了夜空。The night sky was lit up by flashes of light.到了夜里，周遭的铁丝网都被灯光照亮。By night, the perimeter wire was illumined by l...