地理漫步·世界地理英语30篇（3）

23 / 30

已读 0 / 30 课

马里亚纳海沟：海洋地理中的深度维度

The Mariana Trench reaches 11,000 meters deep, making it Earth’s deepest known oceanic feature and a vertical frontier in marine geography.
Its formation results from the Pacific Plate subducting beneath the smaller Mariana Plate at a steep angle over millions of years.
Hydrostatic pressure there exceeds 1,000 atmospheres, compressing seawater density and limiting chemical diffusion rates.
Cold, dense bottom waters sink along continental margins and travel slowly into the trench, carrying dissolved oxygen and nutrients.
Submersible mapping reveals seamounts, landslide scars, and fluid-venting chimneys distributed unevenly along its axis.
Biogeographers classify trench zones by depth-related light absence, pressure thresholds, and microbial metabolic adaptations—not latitude alone.
Sediment layers at the Challenger Deep contain microfossils that record paleoceanographic shifts in deep-water circulation patterns.
Earthquake epicenters cluster along the inner trench wall, highlighting how slab geometry controls seismic energy release.
Unlike surface currents, trench-scale flow is governed by thermohaline gradients and abyssal topography rather than wind.
Studying this trench challenges the traditional horizontal bias of geographic education by centering verticality as a core spatial variable.

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

Hydrostatic pressure there exceeds 1,000 atmospheres, compressing seawater density and limiting chemical diffusion rates. 此处静水压力超过1000个大气压，压缩海水密度并限制化学扩散速率。
Submersible mapping reveals seamounts, landslide scars, and fluid-venting chimneys distributed unevenly along its axis. 载人潜水器测绘发现，海山、滑坡痕迹和流体喷口烟囱沿海沟轴线分布不均。
Biogeographers classify trench zones by depth-related light absence, pressure thresholds, and microbial metabolic adaptations—not latitude alone. 生物地理学家依据深度相关的无光环境、压力阈值及微生物代谢适应性（而非仅纬度）对海沟分区。

这篇中文题目最接近哪一句？马里亚纳海沟：海洋地理中的深度维度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？马里亚纳海沟深达11000米，是地球已知最深的海洋地貌，也是海洋地理学中的垂直前沿。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） The Mariana Trench: Depth as a Dimension of Oceanic Geography How to cook noodles A maths worksheet

Hydrostatic pressure there exceeds 1,000 atmospheres, compressing seawater density and limiting chemical diffusion rates.

Hydrostatic pressure there exceeds 1,000 atmospheres, compressing seawater density and limiting chemical diffusion rates.

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：Hydrostatic pressure there exceeds 1,000 atmospheres, compressing seawater density and limiting chemical diffusion rates.