penillamine

例句：

1. 1. This is the first time I've seen a penillamine in person.
   这是我第一次亲眼见到这种物质。
2. 2. The penillamine was used to treat skin conditions.
   这种物质被用来治疗皮肤疾病。
3. 3. The researchers are still studying the effects of penillamine on human health.
   研究人员仍在研究这种物质对人类健康的影响。