adj. 1.仅只一个的，单独的；单式的；【植物；植物学】(花等)单瓣的；【无线电】单工的，单次的。 2.独身的，单身的；孤独的；一人用的。 3.一人对一人的；单层的。 4.纯真的，单纯的；诚实的。 5.一次的；唯一的；无比的。 6.〔英国〕(酒等)味淡的，力弱的。 n. 一个 (opp. double)。 【棒球】单打；〔美俚〕一垒手；〔pl.〕【网球】单打比赛；〔pl.〕多股线；【植物；植物学】单瓣花；〔英国〕单程票；〔主美，加，常作 pl.〕单身男人[女子]。 each single person 每一个人。 a single life 独身生活。 a single man 单身汉。 a single woman 单身女人；〔委婉语〕妓女。 a single bed 单人床。 a single flower 单瓣花。 a single premium 一次付清的保险费。 a single heart 专一[真诚]的心。 single devotion 全心全意的献身精神。 single ale 淡啤酒。 singles silk 多股生丝，缫制生丝。 with a single eye 诚心诚意地，一心一意地。 work with a single purpose 同心协力地工作。 vt. 拣出，选拔。 single out the biggest apples 拣出最大的苹果。 vi. 1.【棒球】作一垒手。 2.(马)单步行进。 n. -ness 单一，单独；诚意。
being or characteristic of a single thing or person; "individual drops of rain"; "please mark the individual pages"; "they went their individual ways" 同义词：individual,
not married or related to the unmarried state; "unmarried men and women"; "unmarried life"; "sex and the single girl"; "single parenthood"; "are you married or single?" 同义词：unmarried,
existing alone or consisting of one entity or part or aspect or individual; "upon the hill stood a single tower"; "had but a single thought which was to escape"; "a single survivor"; "a single serving"; "a single lens"; "a single thickness"
used of flowers having usually only one row or whorl of petals; "single chrysanthemums resemble daisies and may have more than one row of petals"
not divided among or brought to bear on more than one object or objective; "judging a contest with a single eye"; "a single devotion to duty"; "undivided affection"; "gained their exclusive attention" 同义词：undivided, exclusive,
having uniform application; "a single legal code for all"
characteristic of or meant for a single person or thing; "an individual serving"; "single occupancy"; "a single bed" 同义词：individual,
hit a single; "the batter singled to left field"
a base hit on which the batter stops safely at first base 同义词：bingle,
the smallest whole number or a numeral representing this number; "he has the one but will need a two and three to go with it"; "they had lunch at one" 同义词：one, 1, I, ace, unity,
例句与用法
1.
We have a single room available . 我们有一间单人房间可以租（给你）。
2.
He wished he were young again, single . 他希望他再是个年轻的单身汉。
3.
He wanted to concentrate on a single issue . 他要集中在单一的问题上。
4.
The female pore, are most commonly a single pair . 雌孔大多是一对。
5.
A single branch may bear several catkins . 一根枝条可着生几个花序。
6.
He shucked her out of her single garment . 他剥光她这件单薄的衣衫。
7.
A single gene may have many effects . 单一基因可能具有很多种效应。
8.
Only a single denominator do they share . 他们只有一种共同的特点。
9.
Even a single man bad been able to balk him . 一个人就把他难倒了。
10.
Every single grain is the result of toil . 每一粒粮食都来之不易。
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