The government set out to destroy the organization root and branch.

政府着手完全彻底地摧毁这个组织。

《牛津词典》

A group of thousands of aspens can actually constitute a single organism, called a clone, that shares an interconnected root system and a unique set of genes.

一群成千上万的白杨实际上可以组成一个单独的有机体，被称为克隆，它们共享一个相互连接的根系和一套独特的基因。

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Set the root password for the operating system, and host the operating system on the hardware.

为操作系统设置根密码，并在硬件之上安装操作系统。

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But although the Tories succeeded in introducing a slightly tougher system for incapacity benefit, paid to people deemed incapable of work, they were too cowed by the powerful disability lobby to set about root-and-branch reforms.

ECONOMIST: Welfare reform: Dreams of Field | The

As a security-tightening measure on individual Linux boxes, Ozancin recommends reviewing security-sensitive files, especially those installed set-UID or set-GID to run with the root user's authority (or equivalent).

CNN: Analysis: Linux security

The opposition began a root-and-branch review of policy in 2010 and is expected to set out its stall on key issues in the year ahead, in the run-up to the next general election - scheduled for 2015.

BBC: UK Politics