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1.Scientists found the scroll dates back to the third century, which makes it the oldest script using the symbol.
date back to追溯到…
The progenitor of this class of problems may date back to pre - Greek times.
这类问题的先驱可以追溯到希腊以前的时间。
2.Today, we take it for granted that the concept of zero is used across the globe and is a key building block of the digital world.
take it for granted视为当然
I take it for granted that they have arrived there already.
我还以为他们已经到那儿了。
