4周搞定2000+托福核心词
subjective = sub(下面) + ject(扔) + ive(...的) = 自己扔下去的→主观的
subject = sub(下面) + ject(扔) = 扔下去让大家讨论→主题，话题
surface = sur(之上) + face(表面) = 上面的表面→表面，外表
surmise = sur(之上) + mise(放出) = 在下面说出的话→猜测
地下的
subsurface
常考释义
Geothermal energy becomes available in a practical form when underground heat is transferred by water that is heated as it passes through a subsurface region of hot rocks (a heat reservoir) that may be hundreds or thousands of feet deep.
水流经地表下可能几百甚至几千英尺深的热岩区域（一种热储）被加热，当被加热的水将热量传递出来时，地热能就可以实际形式加以利用了。
来源于：阅读OFFICIAL21 P1adj. 地表下岩石的
They can be misidentified easily in the subsurface as fossil offshore bars.
它们在地下深处最易于与石化了的滨外沙洲混淆起来。
Geothermal energy becomes available in a practical form when underground heat is transferred by water that is heated as it passes through a subsurface region of hot rocks (a heat reservoir) that may be hundreds or thousands of feet deep.
水流经地表下可能几百甚至几千英尺深的热岩区域（一种热储）被加热，当被加热的水将热量传递出来时，地热能就可以实际形式加以利用了。
来源于：阅读OFFICIAL21 P1adj. 地下的；表面下的
This is the important link for problems of subsurface flow.
这是解决地下水问题的重要一环。
This study is concerned essentially with subsurface water.
这里的研究主要针对地下水。
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