activates

v.

put in motion or move to act

同义词：tripactuatetriggerset offspark offsparktrigger offtouch off

make active or more active

"activate an old file"

make more adsorptive

"activate a metal"

aerate (sewage) so as to favor the growth of organisms that decompose organic matter

同义词：aerate

make (substances) radioactive

1. The switch activates the machine.
   这个开关启动机器。
2. The enzyme activates the chemical reaction.
   这种酶激活了化学反应。