activate
verb [ T ] uk/ˈæk.tɪ.veɪt/ us/ˈæk.tə.veɪt/
启动，开动；激活
to cause something to start
The alarm is activated by the lightest pressure. 最轻微的压力也会触动警报。
chemistry specialized（尤指通过加热）加速…的化学反应
to make a chemical reaction happen more quickly, especially by heating