Pitchboard
楼梯踏步三角定线板
🗣️ 情景例句
I thought you wanted to go to Columbia.
我还以为你只想上Columbia大学。
Experience is the father of wisdom and memory the mother.
经验是知识之父，记忆是知识之母。
She got up before 7 o'clock in the morning, and quickly washed her hands and face.
00以前起床，快快地洗手洗脸。