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.Brainy students box , will always pick their teachers'brains, but the brainless ones never do that.聪明敏锐的学生...

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 ances...

adj.无头脑的，愚笨的...

brainless的音标：brainless的英式发音音标为：['breɪnləs]brainless的美式发音音标为：['brenlɪs]...