你们为什么不为家乡的火车轨道做枕木呢？
因为那里要修建铁路，我们要为火车轨道做枕木呢！
Because there should construction of railways, we want to do the train track sleepers too!
热带森林遭毁灭的另一个原因就是世界对枕木的需求。
Another reason for tropical forest destruction is the world's demand for timber.
热带森林遭毁灭的另一个原因就是世界对枕木的需求。
Another reason for tropical forest destruction is the world's demand for timber.
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