The footprints, which have been dated by soot deposited from the torch the child was carrying, are estimated to be about 26, 000 years old.

从旁遗落的火炬烟灰上推断，足迹已经存在大约26000年了。

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The ash contains minerals such as zircon that can be dated precisely from the radioactive decay of some of their components.

这些火山灰中含有锆石等矿物，这些矿物中的某些组分允许进行精确的放射性测年(以确定精确的年代数据)。

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The find, which has been dated to be at least 28, 000 years old and found in a cave near Ulm in Germany, was made from siltstone and was apparently discarded after being broken.

这个在德国南部城市乌尔姆附近洞穴中的发现，至少可以追溯到28000年以前，它是用沙泥岩制成，并在破损后被丢弃。

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Politicians usually become infatuated with Hollywood only when they have to disguise failed policies with star power: the decline of the Clinton presidency can be dated from the time when the celebrities started outnumbering the Ivy League professors at White House dinners.

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The graphics might be dated, but if screenshots from the original version are any indication, it was already well ahead of its time, so it holds up pretty well.

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The effect of this new provision, which was strongly pushed by the NFL in its negotiations with the NFLPA, is to create a couple of advantages for NFL teams: (1) the Tag numbers will be lower, pulling from a more dated pool of numbers, and (2) teams can now use the Tag designation as a greater leverage point in negotiations that is stronger than it was previously.

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