To show that lightning was electricity, Franklin attached a metal key to a kite and flew it during a thunderstorm.
为了证明闪电是电，富兰克林把一把金属钥匙系在风筝上，然后在雷雨天把它放飞。
| 单词 | key metal |
| 释义 |
key metal
原声例句
6 Minute English 六分钟英语 To show that lightning was electricity, Franklin attached a metal key to a kite and flew it during a thunderstorm. 为了证明闪电是电，富兰克林把一把金属钥匙系在风筝上，然后在雷雨天把它放飞。 四级听力真题完整版（无译文） He tied a metal key and a strip of silk to the kite line. 他在风筝线上绑了一把金属钥匙和一条丝绸。 |
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