Stac
abbr. 科技咨询委员会（Science and Technology Advisory Committee）
🗣️ 情景例句
He's upset over the fact that he wasn't promoted this year.
他对今年没有升迁感到恼怒。
I got a dozen eggs.
我拿了一打鸡蛋。
Their life is a natural harmony.
他们的生活是一种自然的和谐，