concurrent lines

例句：

1. 1. The two events occurred concurrently, meaning they happened at the same time.
   这两个事件是共时的，意味着它们在同一时间发生。
2. 2. The concurrent rise in oil prices and global economic uncertainty has led to concerns about inflation.
   油价和全球经济不确定性的上升引起了对通胀的担忧。
3. 3.The researchers found that the concurrent effects of climate change and natural disasters were having a significant impact on the environment.
   研究人员发现，气候变化和自然灾害的共效应对环境产生了显著影响。