jacking engine造句

On a subsequent trip the same packing blew again and then the jacking engine failed, leaving her dead in the water again in E-boat infested waters.
On one of her trips as the invasion progressed the " Clara Barton " blew a major packing in her main engine and limped back to port through E-boat ( German PT-boat equivalents ) infested waters powered by the jacking engine, a small engine intended only to get the main engine off dead center.
It's difficult to find jacking engine in a sentence. 用jacking engine造句挺难的