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小测验：选择正确的单词
- 论坛新贴
subsonic [sʌb'sɔnik]
基本释义
- a. 比音速稍慢的,次音速的
英英解释
1个形容词解释
- (of speed) less than that of sound in a designated medium
[反] sonic, supersonic, transonic
[例]- aircraft flying at subsonic speeds
- (of speed) less than that of sound in a designated medium