中间层

mesosphere

China / Chinese / surname Zhong

within / among / in / middle / center / while (doing sth) / during / (dialect) OK / all right

to hit (the mark) / to be hit by / to suffer / to win (a prize, a lottery)

between / intermediate / mid / middle

the middle; the inside / in the middle; within; between; among / during; in the meantime

between / among / within a definite time or space / room / section of a room or lateral space between two pairs of pillars / classifier for rooms

gap / to separate / to thin out (seedlings) / to sow discontent

to pile on top of one another / layer; stratum / floor (of a building); story / (math.) sheaf / classifier for layers