brainless
adj. 无头脑的,愚笨的
If you describe someone or something as brainless, you mean that you think they are stupid.
I got treated as if I was a bit brainless.
我被当成傻子一样对待。
1. not using intelligence
That was a pretty brainless thing to do.
那样做很愚蠢.
Brainy students box , will always pick their teachers'brains, but the brainless ones never do that.
聪明敏锐的学生会经常向他们的老师详细讨教, 但愚钝的就从来不会做这个.
For instance, it appears the ancestor of brainless starfish and sea urchins had a brain.
例如, 无脑海星和海胆的祖先似乎曾有大脑.