turn the screws的用法和样例：
- Turn the screw to the right to tighten it.
- At each turn the screw goes in further.
- You turn the screws round and round with a screwdriver.
- The congress turned the screws on the president on the issue of selling ammunition to the Iraqi dissidents.
- Turn the screw Counterclockwise (OUT) to decrease the set-point you are controlling.
- A minute later Frank Lampard came on for Ballack, with Chelsea looking to turn the screw.