备用二级头呼吸器 bèi yòng èr jí tóu hū xī qì

DEFINITIONS

  1. backup regulator
  2. octopus (diving)

CHARACTERS

备 bèi
HSK 2
prepare, ready, perfect
用 yòng
HSK 3
use, employ, apply, operate; use
二 èr
HSK 1
two; twice
级 jí
HSK 3
level, rank, class; grade
头 tóu
HSK 3
head; top; chief, first; boss
呼 hū
HSK 4
breathe sigh, exhale; call, shout
吸 xī
HSK 4
inhale, suck in; absorb; attract
器 qì
HSK 5
receptacle, vessel; instrument