there is nothing new under the sun

(figurative) to show one's true colors, to show one's true stripes, to show one's true face

Alternative spelling of mettre la clé sous le paillasson

Alternative spelling of mettre la clé sous la porte

in the limelight, in the spotlight

(figuratively) to sweep something under the rug

it was a long time ago, and much has changed since; it's water under the bridge

Alternative form of ne pas se trouver sous le sabot d'un cheval

(informal) not to grow on trees, to be rare, to be hard to come by

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