If when x is low, y also tends to be low, then this will be negative number and so will this, so their product is positive.

如果x取值小,同时y值也小,这将是一个负值,这个也是负值,负负得正,结果是正值

耶鲁公开课 - 金融市场课程节选

Their subsequent arrest only reinforced people's perceptions of the Pistols - both positive and negative - and the song ended up at number two.

BBC: Malcolm McLaren: The man and the music

As with all such high-level diplomatic missions, he will doubtless be tempted to accentuate the few, putatively positive aspects of the Sino-American relationship, and gloss over the increasing number of negative ones.

CENTERFORSECURITYPOLICY: Get real about China