2 sentences

1. 我们必须防止二次灾害的发生。

   wǒ​men bì​xū fáng​zhǐ èr​cì zāi​hài de fā​shēng.

   We must prevent a secondary disaster.

   Source: OpenSubtitles

2. 我们需要采取措施，减少自然灾害带来的损失。

   wǒ​men xū​yào cǎi​qǔ cuò​shī, jiǎn​shǎo zì​rán zāi​hài dài​lái de sǔn​shī.

   We need to take measures to reduce the losses caused by natural disasters.

   Source: Dong Chinese Dictionary