例句與造句

1. *A rotary hook is a bobbin driver design used in lockstitch sewing machines of the 19th and 20th century and beyond.
2. Each thread stays on the same side of the material being sewn, interlacing with the other thread at each needle hole by means of a bobbin driver.
3. That is, he rethought the entire powertrain the mechanism that carries energy from the handwheel to the needlebar, to the bobbin driver, and to the feed dogs.
4. It's difficult to find bobbin driver in a sentence. 用bobbin driver造句挺難的