1) General subject: bring into action, lead up the ball, make a move, ope ground, ope the ball, open ground, open the ball, take action
2) Mathematics: begin to work, take effect, bring into action (operation)
3) Business: launch
4) Makarov: come in action, come into force, come into operation, come into play
Универсальный русско-английский словарь. Академик.ру. 2011.