How to Use "uncouple" with Example Sentences

1. Uncouple a freight car from a train .
2. We uncouple there , and then we reroute.what does that mean ?
3. Part around which the coupler knuckle pivots to open and uncouple .
4. Such courtesy may reflect , among other things , america 's appreciation that rich gulf producers have declined so far to uncouple their currencies from the dollar , despite its falling value and advice from many local economists .