Sema
abbr. 美国汽车改装用品协会（the Specialty Equipment Market Association）
🗣️ 情景例句
to keep working on my fashion designs.
继续我的服装设计工作。
That's not a good idea!
这样不太好吧！
The clouds had come down so suddenly we had no warning.
乌云突然出现，我们丝毫没有觉察。