Backpitch
反螺旋; 背节距
🗣️ 情景例句
It's an excellent title.
这是个绝妙的书名。
To worry about tomorrow is to be unhappy today.
担心明天，今天就不愉快了。
He will take part in an important race across the Atlantic.
他将参加一次重大的横渡大西洋的比赛。