《招之即来,挥之即去.》是什么意思,出处是出自哪里？

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• French horn
• Yucatan peninsula
• Free access
• Supinely
• Neither here nor there
• Trunk call
• At one fell swoop
• Sulfuric
• Phototropism
• Photojournalist
• Autotrophic
• Megatron
• Perseverant
• Transporter
• be all over
• be all over bar the shouting
• be all over sb
• be all over somebody
• be all smiles
• be all smiles/innocence/sweetness etc
• be all sweetness
• be all sweetness and light
• be all talk
• be all the better for
• be all the better for something
• be all the better for sth
• be all the rage
• be all things to all men
• be all things to all men/people