大大咧咧的英文：
[Dialect] (of a person) careless; casual

参考例句：

There was no looseness or abandon about her
她没有松松散散，也没有大大咧咧。

I tried my best to assume an airy manner.
我尽量摆出一副大大咧咧的样子。

He was a careless, yet eager-looking fellow
他是个大大咧咧，但却神情急躁的家伙。

He seems unconcerned, but nothing escapes his attention.
别看他大大咧咧的，什么事他都很在心。

He dodged his conscience by being jerky and noisy
为逃避良心的责备，他故意装出大大咧咧的样子。

"She's a rough diamond, Although she seems to be careless, she does everything tip-top."
她是个外粗内秀的人。别看她大大咧咧,可干起事来总是顶呱呱。

It would be rash to predict how Passepartout's lively nature would agree with Mr Fogg.
不管是谁只要稍微考虑一下，都不会说这小伙子嘻嘻哈哈大大咧咧的性格会跟福克的脾气合得来。

dialect是什么意思：
n. 方言；土语；地方话
adj. 方言的

I mastered the local dialect.
我精通当地的方言。

He is currently engaged in dialect research.
他目前从事于方言的研究。

Should dialects give way to Mandarin?
方言是不是应该让位给普通话呢？

person是什么意思：
n. 人；身体；外表，容貌；人称

A wanton person.
淫荡的人

an outspoken person
直率的人

You are such a wicked person.
你真是个讨要的人。

careless是什么意思：
adj. 粗心的；无忧无虑的；漫不经心的

The text was corrupted by careless copyists.
原文因抄写者粗心而有讹误。

He is a careless beggar.
他是个粗心的家伙。

He is a careless profligate.
他是个粗枝大叶的浪荡子。