The dark clouds were a precursor to the storm.
乌云是暴风雨的前兆。
The invention of the telegraph was a precursor to modern communication.
电报的发明是现代通信的先驱。
His fever was a precursor to a more serious illness.
他的发烧是更严重疾病的预兆。
Economic downturns can be a precursor to political change.
经济衰退可能是政治变革的前兆。
The early morning fog was a precursor to a sunny day.
清晨的雾是晴天的预兆。
The prototype served as a precursor to the final product.
原型是最终产品的前身。
The strange noise was a precursor to the machine breaking down.
奇怪的噪音是机器故障的预兆。
Her smile was a precursor to a heartfelt conversation.
她的微笑是一场真诚对话的开端。
The early symptoms were a precursor to the disease.
早期症状是疾病的前兆。
The Renaissance was a precursor to the modern era.
文艺复兴是现代时代的先驱。
chemical precursor 化学前体
biological precursor 生物前体
metabolic precursor 代谢前体
precursor molecule 前体分子
precursor protein 前体蛋白
precursor cell 前体细胞
precursor compound 前体化合物
复数: precursors;
