activated

adj.

(of sewage) treated with aeration and bacteria to aid decomposition

(of e.g. a molecule) made reactive or more reactive

同义词：excited

rendered active; e.g. rendered radioactive or luminescent or photosensitive or conductive

set up and placed on active assignment

"a newly activated unit"

1. The alarm system is activated by motion.
   报警系统通过运动被激活。
2. Once the enzymes are activated, the reaction speeds up.
   一旦酶被激活，反应就会加速。