All it takes is one stolen lapTOP in the hands of the right thief to deal expensive and time-consuming damage to people.
句中的粗体部分是不定式，与thief是主谓关系，所以不定式修饰的是thief，不了解如此理解对不对？另外，还烦请老师帮忙翻译一下。
我对这个句子的理解是"仅需有台电脑落入到懂行的贼人手里，这类贼人就会对人民导致时间本钱上的昂贵损害"， 可是如此一来， 不定式的功能仿佛就变了，请老师赐教!
你对句子结构的理解是不对的。
不定式为真的主语，it为形式主语。
这个句子是个假拟分类句，强调宾语。本来是如此的：
It takes one stolen lapTOP in the hands of the right thief to deal expensive and time-consuming damage to people.
it为形式主语，不定式为真的主语。one stolen lapTOP in the hands of the right thief 为宾语。in the hands of the right thief 为 lapTOP的定语。
为了强调宾语，大家可以用强调句型（it 分裂句）：
It is one stolen lapTOP in the hands of the right thief that it takes to deal expensive and time-consuming damage to people.
也可以用假拟分裂句强调宾语：
What it takes is one stolen lapTOP in the hands of the right thief to deal expensive and time-consuming damage to people.
What=the thing which , 也可以用all that 替换what, 就得到本句：
All it takes is one stolen lapTOP in the hands of the right thief to deal expensive and time-consuming damage to people.
