sevens
n. 七人橄榄球；（纸牌）七点；七个，七（seven的复数）
n. （Sevens）（英、美、德、荷）塞文（人名）
例句
His room is at sixes and sevens.
他的房间乱七八糟的。
Another test involved counting backwards by sevens from 9, 095.
另一项测试中，被试要求从9095开始，逐一减7倒数。
They held a party last night and everything was at sixes and sevens when the guests left.
昨晚他们开了一个家庭聚会。当客人散尽之后，一切物品都挪了位置。
