n. 
菊石
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etomal,
etomidate,
Eton,
eton collar,
Etonian,
Etorofu,
etorphine,
Etox,
etoxadrol,
Etoxinol,
相似单词
scapha,
scaphander,
scaphe,
Scaphidiidae,
scaphiform,
scaphite,
scaphium,
scaphocephalic,
scaphocephalism,
scaphocephaly,