Santodex
山道狄克斯(一种粘度添加剂), 粘度指数改进剂
🗣️ 情景例句
You've done a wonderful job.
你做得真棒！
In college I majored in economics, What was you major?
大学时我主修经济，你主修什么呢？
Custom has not commonly been regarded as a subject of any great moment.
风俗一般未被认为是什么重要的课题。