go(/come) home (/straight) to one’s heart; move sb deeply;pull at sb’s heartstrings; touch one to the depths of one’s heart (/soul); touch (/stir/move) the chords of one’s heart; soul-touching;soul stirring; very moving ? 馬克思和恩格斯在長期的革命斗爭中形成的偉大友誼，是～的。The great friendship between Marx and Engels forged in the prolonged revolutionary struggle was very moving.
感人肺腑gan ren fei fu
touch one to the heart
感人肺腑
touch one to the heart;touch one to the depths of one’s soul;tug(or pull) at one’s heartstring
感人肺腑ɡǎn rén fèi fǔ
肺腑：指內(nèi)心。形容非常受感動(dòng)。touch one’s heart, speak to the heart, come straight to one’s heart, bring home to sb.’s heart