Talk of a quick election was pure speculation, she said.

她说，关于快速选举的说法纯属猜测。

The chairman dismissed the report as pure speculation.

【pure】主席对那份报告不屑一顾，认为纯属臆断。

I don't care. Your case was pure speculation, counsel.

那不关我的事，你们的案子纯属猜测，律师。