that stumped him
这把他难住了
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Professor Stephen Hawking may appear to have the answers to all those deep and meaningful questions about time, but there's one that surely has even him stumped - how come daytime TV host Richard Madeley never looks any older?
BBC: 10 THINGS WE DIDN'T KNOW THIS TIME LAST WEEK
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