【英语时差8,16】虫子是如何浮在水面的？-下

 This creates what’s called "surface tension"-a somewhat compressed layer of water molecules¹ right at the pond’s surface. You can think of this layer as being like a tight film over the surface of the pond. How does this help the water bug²? If the surface water stuck to its feet as well as it stuck to the water below, the bug would be pulled under. As it turns out, the bug’s feet are covered with waxy³ hairs that are "hydrophobic"-which means they chemically resist contact with water. This combination of strong surface tension and water-resistant feet is what lets our bug stand on the water, without even getting wet!

1 molecules   

分子( molecule的名词复数 )

参考例句：

• The structure of molecules can be seen under an electron microscope. 分子的结构可在电子显微镜下观察到。
• Inside the reactor the large molecules are cracked into smaller molecules. 在反应堆里，大分子裂变为小分子。

2 bug   

n.虫子；故障；窃听器；vt.纠缠；装窃听器

参考例句：

• There is a bug in the system.系统出了故障。
• The bird caught a bug on the fly.那鸟在飞行中捉住了一只昆虫。

3 waxy   

adj.苍白的；光滑的

参考例句：

• Choose small waxy potatoes for the salad.选些个头小、表皮光滑的土豆做色拉。
• The waxy oil keeps ears from getting too dry.这些蜡状耳油可以保持耳朵不会太干燥。