科学素养与生活应用·英语30篇（4）

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为何某些昆虫能在水面行走而另一些则立刻下沉

Water striders stay afloat thanks to surface tension—a cohesive force creating a 'skin' on liquid surfaces.
Their lightweight bodies and hydrophobic leg hairs trap air and distribute weight over large contact area.
Each leg depresses the surface slightly but never breaks it, like tiny dimples holding them up.
Denser insects like ants lack sufficient leg-to-mass ratio and break surface tension instantly.
Soap or oil contamination reduces surface tension dramatically, causing all insects to sink immediately.
Engineers mimic this principle in micro-robotics for aquatic surveillance devices.
Surface tension also enables capillary action that draws water up plant xylem against gravity.
Temperature affects tension strength—warmer water has weaker surface cohesion.
Even slight vibrations from wind or raindrops can destabilize delicate water-walking balance.
This phenomenon illustrates how intermolecular forces shape everyday biological and physical interactions.

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

Temperature affects tension strength—warmer water has weaker surface cohesion. 温度影响张力强度——水温越高，表面内聚力越弱。
Engineers mimic this principle in micro-robotics for aquatic surveillance devices. 工程师借鉴这一原理，应用于水下监测微型机器人设计。
Even slight vibrations from wind or raindrops can destabilize delicate water-walking balance. 风或雨滴引起的轻微振动，就足以破坏水黾精妙的行走平衡。

这篇中文题目最接近哪一句？为何某些昆虫能在水面行走而另一些则立刻下沉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？水黾依靠表面张力漂浮于水面——这是一种使液体表面形成‘薄膜’的内聚力。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） Why Some Insects Walk on Water While Others Sink Instantly How to cook noodles A maths worksheet

Temperature affects tension strength—warmer water has weaker surface cohesion.

Temperature affects tension strength—warmer water has weaker surface cohesion.

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：Temperature affects tension strength—warmer water has weaker surface cohesion.