Finally, although there were some Westerners who joined al-Qaeda, Anwar al- Awlaki among them, ISIS has proven a much more powerful magnet for Westerners and Americans. It`s now believed U.S. intelligence officials say that something along the lines of a dozen Americans have joined ISIS and dozens more have joined other extremist groups in Syria.
Could you tell what the 'lines' here means? I think it contains a meaning about military by the clue of 'along'. Is it right?
Top answer
'Something along the lines of' = approximately, roughly
— Mister Micawber
'Something along the lines of' = approximately, roughly
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