【今日俚语】“dig in (one''s) heels”是什么意思？

dig in (one's) heels 埋头苦干，蛮干

Explanation：

To cling stubbornly to one's beliefs or wishes. 固执地坚持自己的信仰或愿望

Examples：

Please let me tell my side of the story before you dig in your heels on this, OK?
在你埋头苦干之前请先让我说出我这边的故事，好吗？
 
Well, I told Grace she can't go, and now she's dug in her heels as if this party is the most important thing in her life.
我跟格蕾丝说过她不能去，现在她固执己见，好像这次聚会是她生命中最重要的事情。