唯一的英文：
only
sole

The sole heir
唯一的继承人

Perseverance is the only road to success
不屈不挠是取得胜利的唯一道路

Man is the only risible animal.
人类是唯一“能笑的”动物。

His only fault is that he lacks experience.
他唯一的缺点是缺少经验。

He was the only eyewitness of the robbery.
他是那起抢劫案的唯一目击者。

He is in an anomalous position as the only part-time worker in the firm.
他与众不同，是公司里唯一的兼职人员。

The cheapness of coach travel is its only recommendation.
乘长途汽车唯一可取之处就是旅费便宜。

He was the sole heir to his father's property.
他是他父亲财产的唯一继承人。

Bellicose intercontinental ballistic missiles were not the only spawn of Sputnik's launch.
洲际弹道导弹不是太空竞赛的唯一产物。

The object universal unique identifier (UUID) is the nil UUID.
对象通用唯一标识 (UUID) 为nil UUID。

sole discretion
自行决定权

There was a hole in the sole of his shoe.
他鞋底上有一个洞。

Practice is the sole criterion of truth.
实践是检验真理的唯一标准。

Their sole aim is to destabilize the government.
他们唯一的目的就是要动摇政府的统治。

The soles are made of leather.
鞋底是皮革做的。