noun
1.The action of giving something a trapezoidal shape; the result of this. Now chiefly Cinematography, Television, and Photography: the keystone effect; distortion arising from this.
searching webster dictionary.....
确信所查单词无拼写错误,继续搜索美国城市词典.....
确信所查单词无拼写错误,继续搜索 the Free Dictionary.....
确信所查单词无拼写错误,继续搜索 YourDictionary.....
来自翻译机器....