cross check

名词 cross check:

1. an instance of confirming something by considering information from several sources
   同义词：crosscheck
2. an illegal check (chopping at an opponent's arms or stick)
   同义词：crosscheck

动词 cross check:

1. check out conflicting sources; crosscheck facts, for example
   同义词：cross-check

1. Cross-check your answer by using a calculator.
   用计算器核对一下你的答案。