例句與造句

1. A further demonstration was given, of a rotating iron globe suspended on an axle, which was used to saw some wood.
2. At the meeting point of the arms of the cross a rotating iron dome was placed with a diameter of 7.5 meters.
3. The receivers were then fine-tuned using conventional rotating iron cores, which were mechanically connected to tune both receivers from a single dial.
4. It's difficult to find rotating iron in a sentence. 用rotating iron造句挺難的