Surveil them, forget your sense of guilty, follow your curiosity, share what you know about them like everyone does.
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surveil them
使受监视他们
以上为机器翻译结果，长、整句建议使用 人工翻译 。
"So you have to surveil them a long time until you can say 'okay,maybe he's kind of a suspicious person, so maybe we should investigate it a longer time or not.'
VOA: standard.2010.07.27
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