Third fact: I bet you didn't know that there's enough energy in hot rocks under the country to supply America's energy needs for the next thousand years. And the federal budget calls for a measly 20 million dollars of R&amp;D in geothermal energy.
例三：我打赌你们不知道 美国地下热岩里有足够的能源，能满足全国上下 未来一千年的能量需求。但我们的联邦预算 仅拨了区区2000万美元用于地热能源的研发。