Definition
When an engine turns over, it signifies that its components are moving to initiate the operation of the engine.
（引擎）運轉，翻動
When I turn the key, the engine starts to turn over.
當我轉動鑰匙時，引擎開始轉動。
If your car's engine won't turn over, it might be due to a dead battery.
如果你的汽車引擎無法轉動，可能是因為電池沒電了。
The technician checked the engine to ensure it could turn over properly.
技術人員檢查了引擎，以確保它能正常轉動。