a tender spot; pain spot; sore; sore spot

1. 你曾提到他的前妻刺到了他的痛處。
   You hit a raw nerve when you mentioned his first wife.
2. 小拭子，小墊子用于加藥物、排干或保護傷口或痛處的吸收性的小扁塊
   A small, flat absorbent pad used to medicate, drain, or protect a wound or sore.
3. 藥膏，膠布用于保護傷口或疼痛處的軟裹或敷蓋物
   A dressing or covering applied to protect a wound or sore.
4. 你要是提及這事，會觸及他的痛處。
   If you mention this, you'll touch him on a tender spot.

處的英語翻譯：