经济学人下载:亚洲商业 征服世界

The printers can also create interlocking mechanical parts, such as gears and cogs.
3D打印机也可以制造出具有连锁机制的零部件，比如齿轮和接榫等。

It made money on institutional client services, such as executing trades.
机构客户服务（如执行交易）也实现了盈利。

2.tend to 趋向；偏重

Smaller laptops also tend to have longer battery life.
小巧的电脑也趋向更长的电池持续时间。

I tend to prefer light colors.
我往往更喜欢淡颜色。

3.prone to 倾向于

Most young people are prone to pay attention to multiple stimuli, all at once.
大多数年轻人倾向于同时关注多项刺激。

The area is unstable and prone to rock falls and landslides.
因为该地区地情并不稳定，易于发生岩石坠落和山体滑坡。

4.middle class n.中产阶级

You could call it the global middle class.
你可以称其为全球中产阶级。

His books are all bestsellers among the middle class.
他所有的书在中产阶层中都很畅销。