abbr.cross-out test 正交实验(代号);
例句:
Still , he remains , perhaps, the best X & O analyst in the game.
不过, 也许他还在比赛中保留了最好的X & O酒.
X. O . Hunter : Well , you certainly fooled them, sir.
长官, 想必你把他们唬住了.
The X. O . wired the statements ofyour shipmates.
船长对你同船水手们的口供感到很兴奋.