最終更新日：2024/07/24

pedra de toque

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touchstone (a stone used to test the quality of precious metals) / touchstone (a standard of comparison or evaluation)

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pedra de toque

noun

touchstone (a stone used to test the quality of precious metals) / touchstone (a standard of comparison or evaluation)

A pedra de toque é usada para testar a autenticidade de metais preciosos.

The touchstone is used to test the authenticity of precious metals.