试题题干
Translate the following sentence into Chinese.
But the tremendous expansion of modern civilization now threatens to upset the natural balance, putting unprecedented pressure on the survival of our wildlife.
参考答案
试题解析
考点：tremendous expansion 大肆扩张；unprecedented (a.) 无前例的。
句子结构：句子主干为the tremendous expansion threatens to upset the natural balance，putting···现在分词作结果状语。