Sted
abbr. 同步變遷等價分解（synchronous transition equivalent decomposition）；受激發射損耗
??? 情景例句
What material is this made from?
這是什么材料做的？
He has a brilliant career before him.
他的前途燦爛。
If you learn even a little English, you will find it usedful after you leave school.
假如你哪怕只是學一點英語，畢業后，也會發現它是有用的。