-
Coral reefs are among the most productive ecosystems in the world.
-
珊瑚礁是世界上生产力最强的生态系统之一。
-
They're also in serious danger—climate change and other threats are killing them off.
-
但珊瑚礁也处于严重危险之中——气候变化和其他威胁可能会使其灭绝。
-
But researchers have come up with an invention they think could help the reefs: 3-D-printed corals.
-
但是研究人员想出了他们认为可以帮助珊瑚礁的发明：3D打印珊瑚。
-
At the heart of reef ecosystems lies a symbiosis between corals and algae.
-
珊瑚礁生态系统的核心是珊瑚虫和藻类的共生关系。
-
"Corals use light, they're photosynthesizing, so they have microscopic algae inside their tissues.
-
“珊瑚虫利用光进行光合作用，因此微型藻类会进入它们的组织内。
-
And these use light to generate energy, and that energy is then transferred to the coral animal host.
-
这些藻类用光产生能量，之后能量被转移到珊瑚虫宿主身上。