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1·Because eating frequent meals prevents dips in blood glucose, the primary energy source for the brain.

因为多餐制可以预防血糖下降，血糖是大脑原始能量的提供者。

2·Lactic acid is a by-product of the body's metabolization of glucose, which is the primary energy source for running.

乳酸是身体葡萄糖代谢的副产品，而葡萄糖是跑步的主要能量来源。

3·The harvested methane gas will be utilized as fuel to power the gas turbines at the BMW facility which are the facility's primary energy source.

收获的甲烷气体将被当作燃料，是驱动宝马设施燃气涡轮机的主要能源。

4·Most of the rest of the investment will have to go to exploring and developing new sources of oil, which will remain the world's primary energy source for decades.

其余的大部分资金将用于新油田的勘探和开发，未来几十年中石油仍将是世界的基础能源。

5·Mine mouth power plant can directly convert primary energy source into secondary energy, reducing coal loss in the transportation and environmental pollution, so it has tremendous advantages.

坑口电站可以直接将一次能源转化为二次能源，减少输煤损失和环境污染，具有很大的优势。

6·Physical -this is the primary and most fundamental source of energy.

生理的-这是最主要和最根本的精力来源。

7·The United States will remain the primary source of clean-energy innovation.

美国将依然保持清洁新能源的主要输出国地位。

8·After a century as a primary source of artificial light these energy-guzzling bulbs are set to be replaced by light-emitting diodes (LEDs), powered by semiconductors.

在过去的一个世纪中，白炽灯泡一直为人造灯源的基本产品；但现在，耗能惊人的白炽灯泡注定将被由半导体驱动的发光二极管(LED)所替代。

9·Coal is an important energy in China, coal combustion is the primary source of pollutions which cause great destructions to the ecological environment.

煤在我国是一种重要的能源，煤的燃烧是造成我国生态环境破坏的最大污染源。

10·The primary energy consumption of a DSHS with a coal-fired boiler supplement source is compared with that of a WSHP.

进而对以燃煤锅炉为辅助热源的太阳能直接供暖系统与水源热泵的一次能源消耗进行了对比分析。