这个国家严重依赖外援。
The country ___depends heavily on foreign aid.
过去，这个村庄依赖一口井提供所有用水。
In the past, the village ___depended on a single well for all its water.
我们所依据的理论可能会随着现有证据而改变。
The theory we ___depend upon may change, ___depending upon the available evidence.
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