不規則四邊形

irregular quadrilateral / trapezium

no; not so / (bound form) not; un-

compass / a rule / regulation / to admonish / to plan / to scheme

irregular

rule / regulation / rules and regulations

(conjunction used to express contrast with a previous clause) but / then / standard / norm / principle / to imitate / to follow / classifier for written items

(literary) (conjunction used to express contrast with a previous clause) but; then / (bound form) standard; norm / (bound form) principle / (literary) to imitate; to follow / classifier for written items

four / 4

four sides

side / edge / margin / border / boundary / CL:個|个[ge4] / simultaneously

suffix of a noun of locality

quadrilateral

to appear / to look / form / shape