We might like it to be returned as an integer representing seconds since the Epoch, but in fact we are given a string formatted according to ISO 8601.

我们希望它返回一个整数，以表示从公元纪年到现在的秒数，但实际上得到的是按照ISO 8601格式化的字符串。

youdao

One of the riflemen in my platoon, a big muscular farm boy from South Dakota, had seen, strewn on the Tarawa beachhead, a string of guts twelve feet long belonging to the marine who, only seconds before the mortar blast, had been his best buddy.

NEWYORKER: Rat Beach