jump from的用法和樣例：
例句
- Jumps from one subject to another; jumped from one job to another.
從一個主題突然跳到另一個主題; 從一個工作調換到另一個工作 - The film suddenly jumped from the events of 1920 to those of 1930.
那電影從1920年的事突然跳到1930年的事。 - The airman boldly jump from the airplane with his parachute.
飛行員帶著降落傘勇敢地跳下飛機。 - I couldn't understand his lecture because he kept jumping from one topic to the next.
我聽不懂他的演講，他總是從一項內容跳到另一項內容。
