In a word, marine sediments has become the main reservoir of persistent and poison chemical pollutants in marine environment.

海洋沉积物已经成为海洋水体环境中持久性的、有毒的化学污染物的主要存贮地。

youdao

Who try to poison to the courage, but also of the spirit and practice is the cause of the persistent pursuit.

以身试毒要的是勇气，更要的是实践的精神和事业的执著追求。

youdao

The persistent messages that breast milk is better has lead to a counter-narrative: that formula is poison.

BBC: Formula v breastfeeding: Should the state step in?