s lacking the expected range or depth; not designed to give an illusion or depth
常见例句
1
n a particular geographical region of indefinite boundary (usually serving some special purpose or distinguished by its people or culture or geography) n a subject of study n a part of an animal that has a special function or is supplied by a given artery or nerve n a particular environment or walk of life n a part of a structure having some specific characteristic or function n the extent of a 2-dimensional surface enclosed within a boundary
2
the roundness of a 2-dimensional figure
3
the extent of a 2-dimensional surface enclosed within a boundary n
