make trouble; put sand in the wheels; rock the boat

1. 他存心搗亂。
   He means (to cause) trouble.
2. 把這些搗亂分子趕出去。
   Let's pitch out the troublemakers.
3. 只要有幾個(gè)愛搗亂的學(xué)生，就能把全班攪亂。
   A few disruptive students can easily ruin a class.
4. 今天的比賽有警察防備著搗亂分子。
   Police will be looking out for trouble-makers at today's match.
5. 他如果再來這里搗亂，我就會把他臭罵一頓。
   If he comes here again and tries to make trouble, he'll get an earful from me.

亂的英語翻譯：