n. （大）体积( bulk的名词复数 ); （巨大）物体; 主体; 巨大的体重（或重量、形状、身体等）
英文释义
n the property resulting from being or relating to the greater in number of two parts; the main part
n the property of something that is great in magnitude
n the property possessed by a large mass
v stick out or up
v cause to bulge or swell outwards