| 单词 | ground controller |
| 释义 | > as lemmasground controller ground controller n. ΚΠ 1958 Listener 21 Aug. 259/1 It is the ground controllers' job to see that collisions do not happen. 1970 Daily Tel. 15 Apr. 1/7 Ground controllers..decided against a speed-up plan that would have brought Apollo 13 down by tomorrow night. < as lemmas |
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