fen

fen
/fen; fɛn/ n
1 [C] area of low marshy land 沼地; 沼泽.
2 the Fens [pl]
low marshy areas in parts of East Anglia （英格兰东部的）沼泽地区. =>illus at App 1 见附录1插图, pages xiv, xv.

牛津英汉双解词典