VOA慢速英语:The Grand Canyon: A Sight Beyond Words

短语讲解：

1. They look as if they formed as the earth split apart.

as if 好像， 似乎， 仿佛
例句：It sounds as if you have grown apart from Tom.
听起来好像你和汤姆之间产生了隔阂。

2. At the same time, forces deep within the Earth pushed up the surrounding land.

at the same time 同时; 一起; 但是; 然而
例句：At the same time a piece of sulphur slipped out of his hand.
同时有一块硫磺从他手中滑下。

3. The Grand Canyon was named a Globally Important Bird Area in 2014 because of the role it plays in protecting many species of birds.

because of 因为，由于
例句：John's jacket got out of shape because of the heavy rain.
约翰的夹克因为大雨而变形。

4. The Hopi, the Paiute, the Navajo and other Native American tribes have all been in the area for at least 700 years.

at least 至少
例句：In fact it requires at least n generators.
事实上，它至少要有n个元素。

5. Depending on the time of day, the sun lights up the rock walls in red, orange, and golden colors.

light up 照亮; 点烟
例句：It' s time to light up.
该点灯了。