3325英语网 英语单词
Rocketry的音标发音
Rocketry
英式发音：['rɒkɪtrɪ] or ['rɑkɪtri]
美式发音
(noun.) the branch of engineering science that studies rocket design and operation.
手打:莫尔
(noun.) the branch of engineering science that studies rocket design and operation.
手打:莫尔