rocketry
noun /ˈrɒkɪtri/
  /ˈrɑːkɪtri/
[uncountable]- the area of science which deals with rockets and with sending rockets into space; the use of rockets
 
| 单词 | rocketry | 
| 释义 | rocketrynoun /ˈrɒkɪtri/   /ˈrɑːkɪtri/ [uncountable]
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