Pitchboard
樓梯踏步三角定線板
??? 情景例句
She had to work her way through law school.
她必須半工半讀學(xué)法律。
Out of sitght, out of mind.
眼不見，心不想。
Sure. We were in the same class.
當(dāng)然認(rèn)識。我們同班呢。