吸纳
xī nà · HSK 7
to absorb
🫁 吸 inhale + 纳 receive = breathe something in and take it on board
吸 — mouth radical 口 + reach 及 (phonetic)
吸 is a phono-semantic compound. The mouth radical 口 signals the meaning—an action done with the mouth—while 及 (jí) hints at the original sound. It depicts drawing air or liquid in through the mouth, giving the modern senses 'inhale, suck, absorb'.