red-letter

adj.红字的；用红字表示的

The story of the scarlet letter grew into a legend. 红字的故事渐渐变成了传说。

But through the remainder of Hester's life there were indications that the recluse of the scarlet letter was the object of love and interest with some inhabitant of another land. 不过，从海丝特后半世的生活来看，有迹象表明，这位佩戴红字的幽居者是居住在另一片国度里的某个人热爱和关怀的对象。

We often denote danger by red letters. 我们常常用红字表示危险。