A spider spins a web in which it catches insects and bugs for its food.蜘蛛结网,用于捕捉各种昆虫.All programs have bugs and need endless refinement.所有的程序都有漏洞,都需要不断改进.We noticed tiny bugs that were all over the walls.我们注意到墙上爬满了小虫子。Th...
We left the road, and again bumped over the mountainside.我们驶离公路，再次在山腰上颠簸前行。The couple trudged up the dark mountainside.这对夫妇在黑黝黝的山坡上艰难跋涉。Tracks led up the mountainside.小径沿着山坡向上延伸。...
Dual x - ray absorptiometry was used to measure bone mineral density.双能 X 线骨密度仪被用来股的矿物质密度.Methods: Body composition was measured with dual energy X ray absorptiometry ( DXA ).方法: 采用双能X线吸收测量法 ( dual-energyX -rayabsorptio...