Polytrifluorochloroethylene
聚三氟氯乙烯
??? 情景例句
A vice-presidency
副總裁
Don't forget to accompany me.
不要忘記陪我。
I don't think it is advisable that Tom be assigned to the job since he has no experience.
我覺得把這工作交給湯姆做并不明智，因為他沒有經驗。