2 sentences

1. 当今世界正处于飞速发展的时代。

   dāng​jīn shì​jiè zhèng chǔ​yú fēi​sù fā​zhǎn de shí​dài.

   Today's world is in an era of rapid development.

   Source: Dong Chinese Dictionary

2. 美中关系是当今世界最重要的双边关系之一。

   Měi Zhōng guān​xi shì dāng​jīn shì​jiè zuì zhòng​yào de shuāng​biān guān​xi zhī yī.

   US-China relations are one of the most important bilateral relations in the world today.

   Source: Dong Chinese Dictionary