demonstration jump的用法和樣例：
例句
- Jump into the extreme sport of Skydiving.
跳轉到極限運動的跳傘運動。 - A paratrooper was scared to jump.
有一個傘兵很恐懼跳傘。
demonstration jump的相關資料：
臨近單詞
demonstrations
demonstration
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demonstrations against the Iraq war
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demonstration of weapon and equipment
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Demonstration on Chinese Tea Drinking
