meaningless learning无意义学习
When meaningless当等待失去意义
meaningless thing毫无意义的事
meaningless answer无意义的回答
meaningless proposition[数] 无意义命题
Meaningless talk毫无意义的谈话
ADJ（形容词） If something that someone says or writes is meaningless, it has no meaning, or appears to have no meaning. 没有含义的
The sentence "kicked the ball the man" is meaningless.
句子是没有含义的。
ADJ（形容词） Something that is meaningless in a particular situation is not important or relevant. 不重要的; 不相关的
Fines are meaningless to guys earning millions.
罚款对于能挣几百万的人来说是不重要的。
ADJ（形容词） If something that you do is meaningless, it has no purpose and is not at all worthwhile. 无目的的; 无价值的
They seek strong sensations to dull their sense of a meaningless existence.
他们追求强烈的刺激以减轻他们没有价值的存在感。