这种细粉末可吸收气体，即通过化学方式与水分子结合，形成水合物。
The result is a fine powder that canslurp up gases, which chemically combine with the water molecules to form whatchemists term a hydrate.
但专家说，树木开始充分吸收气体需要数十年，这对于排放二氧化碳的航空公司来说是一个有疑点的补偿。
But experts say it takes decades for trees to start fully absorbing the gas, making them a questionable offset for airplanes, which emit carbon dioxide.
除了吸收气体和星体，M87星系的这个宇宙质量冠军很有可能是一系列黑洞合并的结果，最近的一次可能发生在不太遥远的过去。
Aside from feasting on gas and stars, M87's champion is likely the result of aseries of black hole mergers, the last of which may have happened in the nottoo distant past.
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