单词：be from
来自于
be from的用法和样例：
例句
- Moreover,some serious dangers come not from national armed forces but from groups like alQaeda,against which conventional doctrines won't work.而且，一些严重的危险并非来自某国的武装力量，而是诸如基地组织这类的团伙，既定的国际关系准则对他们无效。