名词
中文翻译：网络爬虫
同义词：
['web crawler', 'spider', 'bot', 'crawler']
例句：
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1.The Netcropper is designed to automatically search for and download web pages.
网络爬虫被设计成自动搜索并下载网页。
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2.The bot was programmed to monitor social media activity and alert the authorities if any suspicious activity was detected.
这个机器人被编程来监控社交媒体活动，并在检测到任何可疑活动时通知当局。
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3. The crawler was able to retrieve all the necessary information from the website in a short period of time.
这个爬行器能够在很短的时间内从网站上检索到所有必要的信息。