keep a sharp lookout是什么意思？

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• tomato
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• monitor
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• cloud
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• PAXLOVID怎么读
• panicked
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• 局外人英文
• 确认英文

• general
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• banger
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• 来源英语
• vehicle
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• 长颈鹿英语怎么说
• ultra
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• 领域英语

• secondaries
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