Haeckel proposed the concept of ecology.

海克尔提出了生态学的概念。

Many of Haeckel's drawings are still studied today.

许多海克尔的绘图至今仍在研究。

Haeckel's theories were controversial during his time.

海克尔的理论在他那个时代是有争议的。

Haeckel's work influenced many scientists in the field of biology.

海克尔的工作影响了许多生物学领域的科学家。

The museum has a special exhibit on Haeckel and his contributions.

博物馆有一个关于海克尔及其贡献的特别展览。

It was invented by Ernst Haeckel, a German biologist.

它是由德国生物学家Ernst Haeckel发明的。