scatterbrain

What a scatterbrain! he's locked his key inside his room again.

他老是这么丢三落四的。瞧，这回又把钥匙锁屋里了。

He is always very careless, that's why he is nicknamed "scatterbrain".

他做事总是稀里马虎的，所以大家都叫他“马大哈”。

Aunt Mary is such a scatterbrain that she always forgets something.

玛丽阿姨糊里糊涂的,她总是忘东忘西.

What a scatterbrain! She forgot to plug in the coffee maker.

真是个糊涂虫！他忘了给咖啡壶插电。

Rabbit owners were the most likely to describe themselves as creative ( 56 per cent), laid back ( 31 per cent), scatterbrain ( 16 per cent), lone-ranger ( 13 per cent) and geek chic ( 13 per cent).

养兔子的人最可能形容自己富有创造力（56%）、闲散（31%）、马大哈（16%）、是独行侠（13%）和极客（13%）。

Conclusion: Abnormity of catecholaminergic neurotransmitters metabolism might lead to scatterbrain, hyperactivity, and difficult studying in patients with ADHD.

结论：单胺类神经递质代谢异常可能是导致ADHD患儿注意力不能集中、活动过度、学习困难的原因之一。

He's such a scatterbrain, always forgetting to lock the door.

他是个马大哈，老忘锁门。

He likes to give the impression of being a bit of a scatterbrain, but he's actually extremely efficient and well-organized.

他喜欢给人一种大大咧咧的印象，但实际上却是极其能干和有条有理的。

Mary is such a scatterbrain that she always forgets something.

玛莉糊里糊涂的，她总是忘东忘西。

He is a scatterbrain.

他是一个注意力不集中的人.