eel英 [i?l]美 [il]n. 鰻魚；鱔魚諧音：壹爾
記憶方法：
1. peel => p + eel => 鰻魚的皮兒 =》 剝掉鰻魚的皮兒。
2. reel => r + eel => 因為鰻魚蛇形的魚類，而蛇形是那種長條形具有纏繞特性的形狀。
英語詞源：
eel (n.)Old English ?l "eel," from Proto-Germanic *?laz (cognates: Old Frisian -el, Middle Dutch ael, Dutch aal, Old Saxon and Old High German al, German Aal, Old Norse all), which is of unknown origin, with no certain cognates outside Germanic. Used figuratively for slipperiness from at least 1520s.