As history shows , this attitude has produced regrettable results .

历史表明，这种态度造成了令人遗憾的后果。

From the perspective of incentives for future excessive risk taking , this is regrettable .

就其对未来承担过度风险（行为）的激励来看，这是令人遗憾的。

It would be even more regrettable if they were to return to picking winners .

如果转身去挑选优胜者的话，那将会更加令人遗憾。

Phelps admitted " regrettable behavior " on sunday after a british newspaper published the photograph .

在英国报纸曝光照片后的星期天，菲尔普斯承认了“令人遗憾的行为”。

And in exploring their regrettable demise , can we get a better understanding of what makes modern humans unique ?

在探索其令人遗憾的消亡时，我们可以更好地了解是什么让现代人这么特别？