【英语时差8,16】为什么闭着眼睛很难单脚站立？（上）

Try standing¹ on one foot. Not so hard, you say? Try it with your eyes closed. Aha! Suddenly things got much harder. With eyes closed you may begin to wobble and tilt², but as soon as you open them, things get easier again. You can achieve this same effect by standing on one foot in a completely darkened room. Don’t laugh until you’ve tried it! what's going on? Well, you may have heard that our sense of balance is centered in our ears. To a certain extent, this is true. In each ear is a series of organs that respond to various kinds of motion. Some sense forward and backward motion, some rotation³.

1 standing   

n.持续，地位；adj.永久的，不动的，直立的，不流动的

参考例句：

• After the earthquake only a few houses were left standing.地震过后只有几幢房屋还立着。
• They're standing out against any change in the law.他们坚决反对对法律做任何修改。

2 tilt   

v.(使)倾侧；(使)倾斜；n.倾侧；倾斜

参考例句：

• She wore her hat at a tilt over her left eye.她歪戴着帽子遮住左眼。
• The table is at a slight tilt.这张桌子没放平，有点儿歪.

3 rotation   

n.旋转；循环，轮流

参考例句：

• Crop rotation helps prevent soil erosion.农作物轮作有助于防止水土流失。
• The workers in this workshop do day and night shifts in weekly rotation.这个车间的工人上白班和上夜班每周轮换一次。