您要查找的是不是：
- Discounted single adult fares range from 4.5 To 15. 成人单程折扣车费由4.;5元至15元不等。
- Researchers in Japan have cloned eight calves from the cells of a single adult cow. 日本的研究者已经利用一头成年母牛的细胞克隆了八头小牛。
- Just a week after Scottish embryologists announced that they had succeeded in cloning a sheep from a single adult cell, both the genetics community and the world at large are coming to an unsettling realization: the science is the easy part. 在苏格兰胚胎学家宣布他们成功地利用单个的成体细胞克隆出绵羊后仅一个星期，遗传学界和整个世界都不安地意识到一个问题：科学问题本身并不难。
- Just a week after Scottish embryologists announced that they had succeeded in cloning a sheep from a single adult cell,both the genetics community and the world at large are coming to an unsettling realization: the science is the easy part. 在苏格兰胚胎学家宣布他们成功地利用单个的成体细胞克隆出绵羊后仅一个星期，遗传学界和整个世界都不安地意识到一个问题：科学问题本身并不难。
- The study also found, unsurprisingly, that unhappily married adults have higher blood pressure than both happily married and single adults. 研究还发现，未出乎我们意料的，婚姻不幸福的人，比婚姻幸福的，或是单身贵族，血压更高。
- The letter was written on a single sheet of paper. 这封信只用一张纸写成。
- One single, second class, to winchester, please. 买一张去温撤斯特单程二等票。
- He got over the stream with a single leap. 他一跃就跳过了小溪。
- The bridge crosses the river in a single span. 河上那座桥是单跨桥。
- Do you want a single or a return ticket? 你要单程票还是往返票?
- Is the material single width or double width? 这幅料子是单幅的还是双幅的？
- I have had to work for every single penny I earned. 我挣的每一便士都是辛苦工作得来的。
- The huntsman fired a single shot at the lion and settled its hash. 猎人朝那只狮子开了一枪，把它打死了。
- Five twenties and ten single, please. 请给我5张20元的和10张1元的。
- She wore a single orchid on her evening dress. 她在晚礼服上缀着一朵兰花。
- Up to yesterday, I thought he was single. 直到昨天，我一直以为他是独身。
- Can you let me have a room with two single bed? 可以给我一间两张单人床的房间吗？
- One of four offspring born in a single birth. 四胞胎之一一胎出生的四个孩子中的一个
- For strong sewing use double, not single thread. 为了缝得牢，用双线，而不要用单线。
- A single grain of a cereal plant. 谷粒禾谷类作物的一个颗粒
