3 sentences

1. 很多人担心转基因食品的安全性。

   hěn​duō rén dān​xīn zhuǎn​jī​yīn shí​pǐn de ān​quán​xìng.

   Many people are concerned about the safety of genetically modified foods.

   Source: Dong Chinese Dictionary

2. 这种新药的安全性已经得到了临床验证。

   zhè zhǒng xīn yào de ān​quán​xìng yǐ​jīng dé​dào le lín​chuáng yàn​zhèng.

   The safety of this new drug has been clinically verified.

   Source: Dong Chinese Dictionary

3. 提高网络安全性是目前互联网公司的首要任务。

   tí​gāo Wǎng​luò ān​quán​xìng shì mù​qián Hù​lián​wǎng gōng​sī de shǒu​yào rèn​wu.

   Improving network security is currently the top priority for internet companies.

   Source: Dong Chinese Dictionary