They decided to dismantle the machine and start again from scratch.

他们决定拆掉机器，从头再来。

《牛津词典》

The scratch on the car, the broken washing machine, the arguments with the spouse, bills, the cleaning up the list goes on.

汽车的刮痕、坏掉的洗衣机、与配偶的争吵、账单……问题就是野火烧不尽的春草。

youdao

Evron believes the only way to be sure that a machine is clean after bot malware is detected is to wipe it and start from scratch.

确保一台计算机绝对安全的唯一办法是，在探测到僵尸木马后彻底对其全新的系统重装。

youdao

Yes, this machine stands out for its scratch-resistant Gorilla Glass lid and 14-inch 1, 600 x 900 display, but a high-res screen can be had for a lower price.

ENGADGET: Look and feel