单词	backchain
释义	backchain noun : a chain attached to each side of a rudder and to a point under the counter to support the rudder in backing Word History First Known Use circa 1889, in the meaning defined above
随便看	sext sextain sextains sextans Sextans sextanses sextant sextants sextarii sexted sextet sextets sextettes sexti- sextile sextiles sextillion sextillions sextillionths sexting sextipara sextipolar sexto sextodecimo sextodecimos

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