Stad
abbr. 学生小组成绩分工法（Student Teams and Achievement Divisions）
🗣️ 情景例句
Why do we need a swimming pool? Everyone in the family hates swimming!
我们需要游泳池做什么呢？家里人都讨厌游泳。
Are there reserved seats on the train?
车上有预订座位吗？
This machine joins the metal pieces together, he said.
“这台机器把金属片焊接起来，”他说