Now if you use a very small engine to make that 18 HP it will be more efficient due to less internal friction then a very large engine making 18 HP.是什么意思_Now if you use a very small engine to make that 18 HP it will be more efficient due to less internal friction then a very large engine making 18 HP.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句