And pardon my naivete , isn 't 20w50 thicker than 10w40 ?

赦免我的天真，是不是20w50厚度大於机油？

There is a smile called naivete .

有一种笑容叫无邪。

He finds the naivete of the young officer very engaging .

他觉得这位青年军官那种天真烂漫的忠心耿耿非常可爱。

Your naivete is refreshing .

你的天真让人愉快。

" The innocence , the freshness , the mischief , the naivete ...... "

‘单纯、清新、淘气、天真无邪’