英语翻译：
slip over; unconcern
【法】 inadvertence
例句：
- 他对该组织的义务和责任采取漫不经心的态度。
He sat loose to the obligations and responsibilities of the organization.
- 这些丹麦人具有征服者的自信，而且他们的安全防卫也是漫不经心的。
The Danes had selfconfidence of conquerors, and their security precautions were casual.
- 这段话要漫不经心地说出来。
This speech is meant to be thrown away.
分词翻译：
不的英语翻译：
nay; no; non-; nope; not; without
【医】 a-; non-; un-
经心的英语翻译：
careful; conscientious; mindful