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壁虎如何不靠胶水就能在玻璃上倒立行走？

Geckos cling to smooth surfaces using billions of microscopic hair-like structures called setae on their toe pads.
Each seta splits into hundreds of even tinier spatulae that make contact at the molecular level with surfaces.
Van der Waals forces—weak electrostatic attractions between molecules—collectively create strong adhesion.
These forces work equally well in vacuum, underwater, or zero gravity, unlike suction or glue-based methods.
A gecko can support its entire body weight with just one toe, and detach instantly by changing toe angle.
Their feet self-clean with every step, shedding dirt particles that might reduce grip efficiency.
No sticky secretions are involved; the mechanism relies purely on physical surface interaction.
Engineers mimicked this design to create reusable dry adhesives for space tools and medical devices.
Interestingly, larger animals cannot scale up this system due to square-cube law limitations on surface-area-to-mass ratios.
Ongoing research explores how humidity and temperature subtly modulate van der Waals bonding strength.

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

Van der Waals forces—weak electrostatic attractions between molecules—collectively create strong adhesion. 范德华力——分子间微弱的静电吸引力——共同产生强大的附着力。
No sticky secretions are involved; the mechanism relies purely on physical surface interaction. 该机制不依赖任何黏性分泌物，纯粹依靠物理表面相互作用。
Their feet self-clean with every step, shedding dirt particles that might reduce grip efficiency. 它们的脚在每一步中自动清洁，甩掉可能降低抓地力的灰尘颗粒。

这篇中文题目最接近哪一句？壁虎如何不靠胶水就能在玻璃上倒立行走？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？壁虎依靠脚垫上数十亿根微小的毛状结构（称为刚毛）吸附在光滑表面上。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 Geckos Walk Upside Down on Glass Without Glue? How to cook noodles A maths worksheet

Van der Waals forces—weak electrostatic attractions between molecules—collectively create strong adhesion.

Van der Waals forces—weak electrostatic attractions between molecules—collectively create strong adhesion.

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：Van der Waals forces—weak electrostatic attractions between molecules—collectively create strong adhesion.