rowel

常見例句

• The statue of General Sedgwick, cast from cannons captured by the VI Corps which he commanded during the Civil War, has rowel spurs that turn.
  塞吉維尅的塑像由一門他在內(nèi)戰(zhàn)中領(lǐng)導(dǎo)的六團(tuán)繳獲的大砲澆鑄而成，周圍是馬刺上的小齒輪。
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