Shelves of coral surround the Pacific island of Palau. Corals, small organisms related to anemones, secrete calcium carbonate, which hardens into an exoskeleton and over time forms reefs.

珊瑚王国。货架的珊瑚环绕太平洋岛国帕劳。珊瑚，小生物体相关的海葵，分泌碳酸钙，其中一个外骨骼变硬，并随着时间的推移形成珊瑚礁。

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The virus infection may arouse the pancreas islet inflammation, and causes insulin to secrete defect and comes into being the diabetes.

病毒感染可引起胰岛炎，导致胰岛素分泌不足而产生糖尿病。

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The most important of these is to get the algae to secrete their products into the culture medium in which they are being raised.

ECONOMIST: Biofuels from algae: Craig's twist | The

Nerves from a part of the rat brain known as the basal forebrain are thought to secrete the chemical acetylcholine into the brain's main vision center, also called the primary visual cortex, reinforcing connections that were recently active.

MSN: Goggle-wearing rats show link between learning, rewards

Rather than grow and harvest biomass, such as wood chips or algae, and then process that into fuel, Joule has engineered microorganisms to secrete fuel and chemicals, including ethanol and diesel.

FORBES: Audi Places Its Biofuel Bets On Joule