循环系统 xún huán xì tǒng

DEFINITIONS

  1. circulatory system

CHARACTERS

循 xún
HSK 6
obey, comply with, follow
环 huán
HSK 3
jade ring or bracelet; ring
系 xì
HSK 1
system; line, link, connection
统 tǒng
HSK 5
govern, command, control; unite