I timed how quickly I could write down a number: about four seconds for 10 digits.

笔者计算了一下自己写下一个数字的速度：约4秒写一个10位数。

youdao

I timed how quickly I could write down a number: about four seconds for 10 digits.

笔者计算了一下自己写下一个数字的速度：约4秒写一个10位数。

youdao