adj.偶然的，偶然发生的，非计划中的

The adventitious roots growing from the stem helped the plant survive in its new environment.
从茎上长出的不定根帮助植物在新环境中存活下来。
The adventitious meeting at the coffee shop led to a lifelong friendship.
在咖啡店的偶然相遇促成了一段终生的友谊。
The musician's talent was not inherited but rather an adventitious gift discovered by chance.
那位音乐家的天赋并非遗传，而是偶然间发现的一种意外赐予。
The adventitious mutation in the lab specimen provided crucial insights into the disease mechanism.
实验室样本中的偶然突变为理解疾病机制提供了重要线索。
The company's success can be attributed to a series of adventitious events and smart decisions.
公司的成功可归因于一系列偶然事件和明智的决策。
The adventitious timing of the investment turned out to be incredibly profitable.
投资的偶然时机证明是非常有利可图的。
The adventitious encounter with the famous author inspired her to pursue a writing career.
与那位著名作家的偶遇激发了她从事写作事业的决心。
The plant's ability to produce adventitious shoots is a key adaptation for propagation.
这种植物产生不定芽的能力是其繁殖的关键适应性特征。
The adventitious mark on the painting was later revealed to be a valuable artist's signature.
画作上那个偶然的痕迹后来被证实是艺术家的珍贵签名。
The adventitious alignment of political interests allowed for unprecedented legislative progress.
政治利益的偶然一致使得立法进程取得了前所未有的进展。