如果火星上的黄钾铁矾也是在微生物的帮助下形成的，我们就有可能在所找到的样品中发现它们的残留物。
It's possible that if the jarosite on Mars was also formed with the help of microorganisms, we might be able to detect remnants of them in the samples we find.
这样就能够打断碳水化合物长链来形成小而可用的分子，而同时将生物燃料中的氧移除并保持住其中的能量成分。
It was thus able to break down long carbohydrate chains to form small, useable molecules while simultaneously removing the oxygen and maintaining the energy content of the biofuel.
珊瑚礁是由历代以浮游生物为食的小水螅所遗留下来的碳酸钙沉积物而形成的。
Coral reefs are formed by deposits of calcium carbonate left by successive generations of tiny polyps which feed off plankton.
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