n. 筛后残余的物；筛屑；残渣

n the display of a motion picture

n fabric of metal or plastic mesh

n the act of concealing the existence of something by obstructing the view of it

n testing objects or persons in order to identify those with particular characteristics

v test or examine for the presence of disease or infection

v examine methodically

v examine in order to test suitability

v project onto a screen for viewing

v prevent from entering

v separate with a riddle, as grain from chaff

v protect, hide, or conceal from danger or harm