科学美国人60秒 3D打印可以保护珊瑚礁

（单词翻译）

• Coral reefs are among the most productive ecosystems¹ 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 killing² 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 symbiosis³ between corals and algae⁴.

• 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 microscopic⁵ 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。