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  1. ...generally use a slightly undersized projectile that is designed to obturate upon firing to seal the bore and engage the rifling. Since...

    分類:社會與文化 > 語言 2006年08月25日

  2. ...then can not feel you very difficult get alone, often supposing that oneself obturate rise, then not just you not want approach the other, but the other too want alienate you...

    分類:社會與文化 > 語言 2007年01月05日