求翻译：第一,车子经过长时间的停放,引擎内的机油又流回引擎下部之机油底壳内。因此在久未用车后发动引擎,其时引擎的上半部是处于没有机油,缺乏润滑的状况。大约要在发动后30秒左右,才会因机油泵浦的运转而将机油运送到引擎最需要润滑的活塞,连杆及曲轴等部件。是什么意思？

First, the car after a long period of parking, engine oil flows back to the sump of the engine, the lower part of the machine. Thus in Kumi car after the engine, the upper half of the engine is in the oil, lack of lubrication conditions. About 30 seconds after launch, and due to the operation of the