hybrid cline

例句：

1. 1. The hybrid cline has a unique appearance that distinguishes it from other plants.
   杂交线具有独特的外观，与其他植物不同。
2. 2. The hybrid cline is used to separate different species of plants during the breeding process.
   杂交线用于在育种过程中区分不同的植物品种。
3. 3. The hybrid cline was discovered by a scientist who wanted to study the genetics of different plant species.
   杂交线是由一位科学家发现的，他想要研究不同植物物种的遗传学。