生态系

污染严重威胁着海洋生态系统。

wū rǎn yán zhòng wēi xié zhe hǎi yáng shēng tài xì tǒng.

Pollution is seriously threatening the marine ecosystem.

这场惨绝人寰的特大森林大火给当地原始生态系统带来了一场几乎难以挽回的生态浩劫。

zhè chǎng cǎn jué rén huán de tè dà sēn lín dà huǒ gěi dāng dì yuán shǐ shēng tài xì tǒng dài lái le yī cháng jī hū nán yǐ wǎn huí de shēng tài hào jié.

This tragic and devastating forest fire has brought an almost irreversible ecological catastrophe to the local original ecosystem.

在茂密湿润的热带雨林生态系统中，生活着千奇百怪的珍稀动植物物种。

zài mào mì shī rùn de rè dài yǔ lín shēng tài xì tǒng zhōng, shēng huó zhe qiān qí bǎi guài de zhēn xī dòng zhí wù wù zhǒng.

In the dense and humid tropical rainforest ecosystem, there are all kinds of rare animal and plant species living.