This is the reason why automotive engineers say that initial starting and warm-up of the engine is hardest on the engine and wears it the most.

　
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  • 由于這個(gè)原因,汽車(chē)工程師們說(shuō)發(fā)動(dòng)機最初的啟動(dòng)和預熱是很難對付的,并會(huì )使發(fā)動(dòng)機受到最大的損壞。
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