1.on the trail 追踪；寻找

例句:There was a newspaper on the trail of the story.
有一家报纸在追踪报道此事。

2.coding style 编码风格

例句:While you would not want to adopt this coding style, it helps explain how the processor works.
虽然您不会采用这种编码风格，但它有助于解释处理程序是如何工作的。

3.hard drives 硬盘驱动器

例句:I just hope your hard drives are backed up.
我只是希望你把你的硬盘备份一下。

4.the central bank 中央银行

例句:The Central Bank is authorized to sell government bonds on the open market.
中央银行获授权公开发行政府债券。