工程师们尝试用蒸汽，酸和酶把纤维素分解成有用的糖。
Engineers have tried using steam, acids and enzymes to break cellulose into useful sugars.
工程师们还排放了核电站产生的蒸汽，以释放积聚的压力。
Engineers have also vented steam from the plants to release a build-up of pressure.
大多数工程师在寻找地下蒸汽作为地热发电厂的动力时，对于地热资源的挑剔程度不亚于这个小女孩。
Most engineers looking for underground sources of steam to generate geothermal power have similar tastes.
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