I'm drawing a line in the sand.

我这是在表明立场。

But this was Biden really drawing a line in the sand.

但拜登是在真正设置底线。

That is your limit! This is similar to drawing a line in the sand.

那是你的极限！它的意思和" 划清界限（draw a line in the sand）" 的意思相近。

Together as a society, we need to draw a line in the sand.

作为一个社会, 我们需要在沙滩上划一条线。

When our enemies draw a line in the sand and we pass over that line, we could also say we have crossed the Rubicon.

当我们的敌人在沙子上划出一条线，而我们越过这条线时，我们也可以说“we have crossed the Rubicon”（我们已经无法回头了）。

He said that, kind of, First Republic really kind of drew a line in the sand of the most kind of severe aspect of the recent stress.

他说，在某种程度上， 第一共和国确实在最近压力最严重的方面划清了界限。