1. Many drugs on the market today are semisynthetic, meaning they are derived from natural compounds but have been chemically modified in the laboratory.
如今市场上的许多药物都是半合成的，意味着它们是由自然化合物衍生而来，但在实验室中进行了化学改造。

2. Semisynthetic fibers, such as rayon and nylon, have revolutionized the textile industry.
半合成纤维，如人造丝和尼龙，已经彻底改变了纺织业。