至关紧要

zhì guān jǐn yào de shì wǒ men yīng dāng cǎi qǔ xíng dòng zhì zhǐ pò huài yǔ lín

至关紧要的是，我们应当采取行动制止破坏雨林。

It is vital that we act to stop the destruction of the rainforests.