Naphthenics
润滑油中粘度随温度急变的组分
🗣️ 情景例句
There's so much for young people to see and do.
这里有很多可供年轻人看和做的事情。
He is good at reading and writing, but he wishes he knew how to understand and speak better.
他的阅读和写作是强项，但他希望知道怎样去理解和说得更好。
You do not have to devise ways of taking your mind off the journey, for an aeroplane gets you to your destination rapidly.
你不必想办法去摆脱旅途的困扰，因为飞机会迅速地把你送到目的地。