副 here is a classifier (set of)
計 (gai2) here means "engine"
大計(gai2) - ship engineer
計(gai2)油 - motor-oil
我副計 = "my engine" figuratively means :" my organs / my body"
** 計 may not be the correct character, it is most likely a loaned word for " gauge"
計 (gai2) here means "engine"
大計(gai2) - ship engineer
計(gai2)油 - motor-oil
我副計 = "my engine" figuratively means :" my organs / my body"
** 計 may not be the correct character, it is most likely a loaned word for " gauge"