a decision or a problem that you do not need to think about much because it is obvious what you should do 无需用脑的事；容易的决定 The question of who to support in this election should be a no-brainer. 谁来支持这次选举的问题应该是显而易见的。 I said yes straight away. It was a no-brainer for me. 我马上说是。对我来说，这很容易。