N
the outer layer of cytoplasm in some cells, esp protozoa, which differs from the inner cytoplasm in being a clear gel (尤指原生动物的)外质
[cytology]
→
see also
endoplasm
But by early Thursday morning, passengers started exiting the plane's rear staircase, captured on live, night-vision video as ethereal yellow ectoplasms, robes whirling in the pre-dawn chill.