abbr. Direct Read out Ground Station 
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half-witted, half-wool, halfword, halfy, half-yearly, halibut, halic, Halichondrida, halicole, Halictidae,
相似单词
drewite, drey, Dreyfus, Dreyfusard, DrFeelgood, DRGS, DRI, drib, dribbing, dribble,