函数语言结构，如高阶和一级函数，能让我对抽象的理解更进一步，让我更多地将精力放在代码能做什么 而不是怎么做 上。

Functional language constructs such as higher-order and first-class functions allow me to climb one more rung up the abstraction ladder and focus more on what the code does rather than how it does it.

youdao

五年后，27%的原定为A级的公司债券遭到降级，而市政债券和主权债券中这一比例分别只有6%和3%，结构型产品不出所料仍是表现最差的，降级率高达53%。

After five years, 27% of A-rated corporate bonds were downgraded, versus 6% of municipal bonds and just 3% of sovereign issues. Unsurprisingly, a whopping 53% of CDOs were downgraded.

youdao

N级结构中的应用服务器负责提供可远程访问的业务逻辑组件，而表现层网页服务器则使用本网协议通过网络访问这些组件。

The application servers in n-tier architecture host remotely accessible business components. These are accessed by the presentation layer web server over the network using native protocols.

youdao