adj .
happening at the same time ; parrellel 동시에 발생하는 ; 병행하는

• The criminal was sentenced to two _____ fifteen-year sentenced ;the sentences will run at the same time, and he will be out of jail in fifteen years.
• High prices, falling demand and poor weather were three _____ trends that made life especially difficult for popcorn farmers last month.
• To concur means to agree. The assistant wanted to keep his jobs, so he always concurred with his boss.