【英语时差8,16】水墙形成时会发生什么呢-下

Here’s How..In a lake, cold water sinks to the bottom, forming a distinct layer underneath¹ the warmer water on top. Wind blows across the top layer. This causes more of that warm layer to build up on one end of the lake, pushing the cold layer underneath in the opposite direction. When the wind stops, the warm water sloshes back, pushing the cold water in the other direction. There are now two sloshing waves that balance each other out. Unlike your tub, however, because they balance out the surface remains² calm. That hidden sloshing can be enormously powerful. Sometimes the slosh-wave can be up to three hundred feet deep. It can scour³ the bottom of lakes and cause objects resting there to be flung up toward the shores.

1 underneath   

adj.在...下面，在...底下；adv.在下面

参考例句：

• Working underneath the car is always a messy job.在汽车底下工作是件脏活。
• She wore a coat with a dress underneath.她穿着一件大衣，里面套着一条连衣裙。

2 remains   

n.剩余物，残留物；遗体，遗迹

参考例句：

• He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
• The remains of the meal were fed to the dog.残羹剩饭喂狗了。

3 scour   

v.搜索；擦，洗，腹泻，冲刷

参考例句：

• Mother made me scour the family silver.母亲让我擦洗家里的银器。
• We scoured the telephone directory for clues.我们仔细查阅电话簿以寻找线索。