慢速英语:Another World, Underground: Carlsbad Caverns National Park

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短语讲解：

1. Most are closed to the public. But anyone can visit the main attraction, one of the largest caves in the world.

close to 离…近; 与…关系密切; 近乎; 临近
例句：Today it is close to zero.
当今，利率接近于零。

2. Come along with us, as Bob Doughty and Barbara Klein tell you about Carlsbad Caverns.

along with 和…一起[一道]，随着
例句：Along with counter-reform came a political crackdown.
随着反改革的发展，古巴出现了一个政治镇压。

3. An elevator lowers you into the world of Carlsbad Cavern, the big cave at Carlsbad Caverns National Park. Silent, except for the voices of guides and visitors.

except for 除…之外; 若不是
例句：No one can finish the mileage except for you.
除了你没人能跑完这个里程。

4. The Big Room is more than three hectares big.

more than 不只是; 很; 超过; 在…次以上
例句：More than 1000 turned up.
最后共有1000多人出席。

5. Other formations look like needles, popcorn, pearls and flowers.

look like 看起来与（某人或某物）相像
例句：This is starting to look like a revolution.
这开始看起来像是一场革命。

6. About 400,000 Mexican free-tailed bats come to the big cave from Mexico each summer to give birth.

give birth 使诞生，生（孩子）
例句：Though a mother give Birth to nine sons, all nine will be different 
一娘养九子九子九个心