十万个为什么·科学阅读30篇（4）

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海洋环流如何将塑料垃圾聚集成巨型垃圾带？

Ocean gyres are large, slow-moving circular currents driven by wind patterns and Earth’s rotation.
Five major subtropical gyres trap floating debris in their calm central zones called 'convergence zones'.
Plastic fragments break down into microplastics but remain buoyant due to low density and surface tension.
Current models show that over 80% of ocean plastic originates from land-based sources via rivers.
The North Pacific Gyre hosts the largest accumulation zone, known informally as the Great Pacific Garbage Patch.
Satellite tracking and drifting buoys help scientists map transport pathways and residence times.
Marine organisms mistake microplastics for plankton, introducing toxins up the food chain.
Cleanup efforts focus on intercepting riverborne waste before it reaches open ocean circulation.
Biodegradable alternatives fail in seawater because salt and cold inhibit microbial breakdown.
Oceanographers combine fluid dynamics simulations with field sampling to predict future accumulation hotspots.

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

Marine organisms mistake microplastics for plankton, introducing toxins up the food chain. 海洋生物将微塑料误认为浮游生物，使毒素沿食物链向上累积。
Biodegradable alternatives fail in seawater because salt and cold inhibit microbial breakdown. 可降解替代品在海水中失效，因为盐分和低温抑制微生物分解。
Satellite tracking and drifting buoys help scientists map transport pathways and residence times. 卫星追踪与漂流浮标帮助科学家绘制塑料传输路径和滞留时间。

这篇中文题目最接近哪一句？海洋环流如何将塑料垃圾聚集成巨型垃圾带？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？洋流环流是由风型和地球自转驱动的大规模缓慢环流。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） How Do Ocean Gyres Concentrate Plastic Waste Into Massive Patches? How to cook noodles A maths worksheet

Marine organisms mistake microplastics for plankton, introducing toxins up the food chain.

Marine organisms mistake microplastics for plankton, introducing toxins up the food chain.

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：Marine organisms mistake microplastics for plankton, introducing toxins up the food chain.