take action              ph.  採取行動；提出訴訟

We have to take action to stop them. 我們得採取行動來制止他們。

He took action against Jack. 他控告傑克。

The medicine will not take action for two hours. 這藥在兩小時後才會起作用。

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Although strict measures have been taken to discourage the use of mobile phones inside the opera house, their effectiveness remains limited.

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discourage    v.    勸阻 ; 使灰心

discourage sb from V-ing

John's parents discourage him from taking drugs.