







rigorous
strictly tested
well-vetted
heavily scrutinized

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Open the tool →层层考验的 (céng céng kǎo yàn de) means “rigorous, strictly tested, well-vetted, heavily scrutinized”.
层层考验的 is pronounced céng céng kǎo yàn de in Mandarin Chinese.
“rigorous” is 层层考验的 (céng céng kǎo yàn de) in Chinese.