date to/ date at
date….to 可追溯sth到...几年，强调发生的时间点，后面是ago
date….at 年代判定、鉴别/年份有….年之久，强调发生到现在经过的时间有多长，后面是old
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date…..to可追溯sth到...几年，强调发生的时间点 |
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P1-129 |
The teeth and jawbones found in Tanzania by Dr. Mary Leakey and dating to 3.75 million years ago are the oldest reliably dated human fossils. |
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G21-34 |
Scientists have dated sharp-edged flakes of stone found in the fine-grained sediments of adry riverbed in the Afar region of Ethiopia to between 2.52 and 2.60 million years ago, pushing back by more than 150,000 years the earliest date at which humans are known to have made stone tools. |
