sporoderm

例句：

1. 1. Thescientist discovered the sporoderm ofa new species.
   科学家发现了一个新物种的外皮。
2. 2. The researcher studied the sporoderm of the plant to understandits growth patterns.
   研究员研究了植物的外皮，以了解其生长模式。
3. 3.The farmer carefully removed the sporoderm from the fruit to prevent contamination.
   农民小心翼翼地从水果上去除外皮，以防止污染。