be expert at sth.是什么意思？

• ultra
• permitted
• erased
• panicked
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• modernize
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• PEGGING
• supper
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• monitor
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• BARRIE
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• chess翻译
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• pear
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• 造型的英文
• front

• hoggerel
• Political alms
• living matter
• Bronch
• reducing station
• Tell something
• Oxonian
• Arachnoid dust
• hydrosulfate
• A sweet wine
• Too tired
• Lupe
• All monks
• balance in power
• a short shrift
• A spray of liquid
• be on leave
• Hate yourself
• Alternative caravan
• personal experience
• draining well
• Keep besieging
• pleadable
• steel concrete
• To reach the vertex