shì / qíng / yǐ / jīng / wú / fǎ / wǎn / huí / xiàn / zài / hòu / huǐ / bù / dié / yě / méi / yǒu / yòng / le

事情已经无法挽回，现在后悔不迭也没有用了。

There is no way to undo what happened, so regretting it now is useless.