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Forests are the lungs of the earth. Without them, it cannot breathe.
森林是地球的肺。沒有森林，地球就無法呼吸。
It needs it's forests to remove carbon dioxide from the air and to make oxygen.
地球需要森林來消耗二氧化碳并產生氧氣。
In many countries, such as New Zealand, Canada, and Brazil, forests were cut down to provide wood to build houses.
在很多國家，比如新西蘭、加拿大、巴西，人們砍伐森林為建房提供木材。
Many young volunteers around the world are working in their holidays to plant new trees to replace them.
全世界有很多年輕的志愿者利用假期植樹造林，替代被砍伐的森林。
These young men and women face many difficulties when they plant new trees.
這些年輕人在植樹造林時面臨著許多困難。
The weather may be very hot and dry or it may be very cold and wet.
天氣可能又熱又干，或者又冷又濕。
There are often many insects that bite these planters on their legs, arms, and faces while they work.
他們工作時，腿部、胳膊和臉部經常會被蟲子咬。
They carry heavy bags of small trees, and working in the mountains can be dangerous.
他們需要背著裝有樹苗的沉重袋子，而且在山區工作會很危險。
Tree planters are changing the world.
植樹者在改變著這個世界。
They plant different types of trees so that birds and animals can live in the forests.
他們種植不同種類的樹木，讓鳥類和動物們能在森林里生活。
Even though tree planting is very difficut, they love their work.
盡管植樹困難重重，但是他們依然熱愛自己的工作。
They believe that in 50 years their litte trees will because become forests.
他們相信50年以后，他們的小樹苗都會變成森林。
