结果表明：随着服硒量的增加，中毒症状逐渐加剧。

The results show that: the symptom of poisoning is exacerbated with the increase of selenium intake.

伯明翰市温森格林地区这三名年轻人的遇难引发逐渐加剧的紧张局势和对报复的恐惧感。

The deaths of the three men in the Winson Green area of the city led to increased community tensions and fears of reprisals.