Backstand
張緊座; 后座; 支撐結構
??? 情景例句
Make yourself at home.
不要客氣。
What do you want?
你到底想怎樣？
She got to school early. She had a little rest after lunch, but she worked hard in class all day.
她早早來到了學校。午飯后她小休一會兒，但一整天她在課堂上都很用功。