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Jyutping jap6 sam1
Pinyin rù xīn

Definitions (CC-CANTO)
  1. to enter one's heart or mind
Definitions (Wiktionary)
  1. verb, literary
    to understand what is implied
  2. adv, Taiwanese-Hokkien
    attentively; diligently
  3. adv, Hokkien, Quanzhou, Xiamen
    extremely
    (syn.) 入腹, 極了, 极了, 入骨
  4. adv, Min-Nan
    by heart; deeply (of teachings, feelings, words, etc.)
Examples (粵典–words.hk)
  1. Cantonese
    带氧嘅血液由肺部流入心脏,再由大动脉输出到身体各部分。
    帶氧嘅血液由肺部流入心臟,再由大動脈輸出到身體各部分。
    daai3 joeng5 ge3 hyut3 jik6 jau4 fai3 bou6 lau4 jap6 sam1 zong6, zoi3 jau4 daai6 dung6 mak6 syu1 ceot1 dou3 san1 tai2 gok3 bou6 fan6.
    • Oxygenated blood flows from the lungs to the heart, and is then transported to each part of the body through the aorta.
  2. Cantonese
    痛到入心入肺
    痛到入心入肺
    tung3 dou3 jap6 sam1 jap6 fai3
    • of a great pain