有了水，将木材运往加工厂和海外市场就更加轻松，但随着伐木工人被迫深入内地，他们需要开发新的运输方法。
The water made it easy to move timber to mills and overseas, but as loggers were forced farther inland, they needed to develop new methods of transporting their product.
如今新开发的铜矿还不多，而随着旧铜矿开采的深入，上等品级的矿石已逐渐开采完，矿石品级已不如从前。
As older mines get deeper and the choicest parts of deposits become exhausted, ore grades have declined.
随着人类对自然的深入开发，破坏自然生态平衡的行为越演越烈。
With the further development of human nature, ACTS of destructing the natural ecological balance are intensified.
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