单词	sprag
释义	sprag noun ˈsprag  : a pointed stake or steel bar let down from a halted vehicle (such as a wagon) to prevent it from rolling Word History Etymology origin unknown First Known Use 1902, in the meaning defined above
随便看	ancon Ancon sheep Ancona ancone ancones anconoid ancony ancred ancress ancresses ancrée anct ancyl- ancyli Ancylidae ancylidaes ancylite ancylo- Ancyloceras Ancylocladus Ancylodactyla Ancylopoda ancylose ancylosed ancyloseed

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