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a stern look/warning/voice
严厉的目光／警告／语气
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She is her own sternest critic.
她对自己非常苛刻。
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Journalists received a stern warning not to go anywhere near the battleship.
记者们受到严厉警告，不得靠近军舰。
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The country's president is facing the sternest test of his authority since he came to power five years ago.
总统的权威正面临着上任5年以来最严峻的考验。
