在寄生现象中，寄生虫通常会伤害宿主。

In parasitism, the parasite often harms the host.

寄生可能会导致宿主的健康状况恶化。

Parasitism can lead to the deterioration of the host's health.

寄生现象是各种昆虫物种中常见的策略。

Parasitism is a common strategy among various species of insects.

科学家们研究了不同类型的寄生关系。

Scientists have studied different types of parasitism relationships.

寄生现象可以在世界各地的许多生态系统中找到。

Parasitism can be found in many ecosystems around the world.