preservation of timber

例句：

1. 1. The government is working hardto preserve the natural habitat of endangered species.
   政府正努力保护濒危物种的自然栖息地。
2. 2. The scientist is aconservationist who works tirelessly to protectwildlife.
   这位科学家是一位致力于保护野生动物的环保主义者。
3. 3. Preservationists argue thatclimate change is a serious threat to theenvironment.
   环保主义者认为，气候变化对环境构成了严重威胁。