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Hydra
01
九头蛇
a freshwater polyp with a cylindrical body and tentacles
02
九头蛇
trouble that cannot be overcome by a single effort because of its many aspects or its persistent and pervasive quality
03
九头蛇
a long faint constellation in the southern hemisphere near the equator stretching between Virgo and Cancer
04
九头蛇
a mythical serpent-like creature in Greek mythology that has multiple heads, and if one head is cut off, two more will grow in its place
What is the "hydra"?
The hydra is a mythical creature from Greek mythology, often depicted as a serpent-like monster with multiple heads. According to legend, when one of its heads is cut off, two more grow in its place, making it extremely difficult to defeat. The hydra is best known from the story of Hercules, who had to kill it as one of his Twelve Labors. The creature is usually associated with destruction and chaos, symbolizing an overwhelming threat that seems to multiply when attacked.
例子
In the ecosystem, the hydra plays a role as a primary consumer, feeding on small organisms and contributing to nutrient cycling.
Under the microscope, the intricate structure of the hydra's tentacles became visible, revealing its feeding mechanisms.
The textbook described the unique reproductive capabilities of the hydra, which can reproduce asexually by budding.
In the lab, students conducted experiments to study the feeding behavior of the hydra.
Researchers observed a hydra attached to the underside of a leaf in the pond, its tentacles swaying gently in the water.
