世界地理与人文·英语30篇（2）

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里海：世界最大内陆水体及其不断变化的岸线

The Caspian Sea is not a true sea but a landlocked, saline lake bordered by five countries.
Its surface level fluctuates naturally over decades due to changes in Volga River inflow and evaporation rates.
Oil and gas infrastructure clusters along shallow northern shores where sedimentary layers are thickest.
Shoreline erosion intensifies where dams reduce sediment delivery from major rivers like the Ural.
Salt flats and mud volcanoes mark tectonically active zones along the southeastern margin.
Fish migration routes depend on seasonal salinity gradients between north and south basins.
Urban expansion in Baku and Astrakhan alters local hydrology without transboundary coordination.
Remote sensing reveals rapid wetland loss near deltaic zones since the 1990s.
The Caspian’s closed basin makes it especially vulnerable to cumulative upstream water withdrawals.
Its unique biogeographic isolation has fostered endemic sturgeon species found nowhere else on Earth.

听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。

Urban expansion in Baku and Astrakhan alters local hydrology without transboundary coordination. 巴库和阿斯特拉罕的城市扩张改变了局部水文，却缺乏跨境协调。
Remote sensing reveals rapid wetland loss near deltaic zones since the 1990s. 遥感显示，自1990年代以来，三角洲区域湿地快速消失。
Salt flats and mud volcanoes mark tectonically active zones along the southeastern margin. 盐沼和泥火山分布于东南边缘构造活跃带。

这篇中文题目最接近哪一句？里海：世界最大内陆水体及其不断变化的岸线一次学校运动会的通知一份超市购物清单

课文第一句的意思更接近？里海并非真正的海，而是被五国环绕的内陆咸水湖。今天学校放假了。请把窗户打开。

这一课主要在讲什么？（看英文标题） Caspian Sea: The World’s Largest Inland Water Body and Its Shifting Shorelines How to cook noodles A maths worksheet

Urban expansion in Baku and Astrakhan alters local hydrology without transboundary coordination.

Urban expansion in Baku and Astrakhan alters local hydrology without transboundary coordination.

第一版：录下来、回听、再听标准音。系统打分以后再加。

用今天的表达，自己说一句。

例子：Urban expansion in Baku and Astrakhan alters local hydrology without transboundary coordination.