吸入

吸入	xī rù	to breathe in / to suck in / to inhale
吸	xī	to breathe / to suck in / to absorb / to inhale
入	rù	to enter; to go into / to join; to become a member of / (bound form) to conform to (as in 入时) / abbr. for 入声 / (on product packaging, after {number n} + {classifier}) containing (n pieces) (from Japanese 入 "iri")