Attitudes towards the terrorists have hardened even more since the attack.
自从那次袭击后,对待恐怖分子的态度更加强硬了。
3written if your face or voice hardens, or if something hardens it, you look or sound less sympathetic or happy(使)〔脸色、嗓音〕变得冷峻OPP soften
His face hardened momentarily, then he looked away.
他的脸色一时阴沉下来,随即把头转向一边。
4.harden your heartEMOTIONALto make yourself not feel pity or sympathy for someone 硬起心肠
Examples from the Corpus
harden your heart• But difficulties did not harden his heart.• Today, if you hear his voice, do not harden your hearts.• And then Nancy will harden her heart against him.• She hardened her heart and thought she should swiftly make it clear she had not come in search of him.• He hardened his heart and turned on his computer, smiling acidly at the screen.• He tried to harden his heart in advance, but knew it was just a front.• The girl had hardened her heart so much; there was no point in giving her further cause.• When he had left her with a tinybaby, she had hardened her heart somehow.