Beijing International Airport is a modernized airport.北京国际机场是一座现代化的机场.The contemporary and technology is permeating into geology, making it modernized.现代科技向地质科技的渗透, 促进了地质科技现代化.Helicopters have been upgraded and modernize...
正常的双螺旋DNA是螺旋形的, 像一根松松地卷曲的弹簧.Normal, double - helix DNA is spiral, like a loosely coiled spring.这就是双螺旋.This is the double helix.由此产生的双螺旋结构减少了摩擦,并允许更快, 更容易系带.The resulting double helix reduces friction and allows faster, e...