相關(guān)單詞近義詞 lookout 瞭望臺(tái)臨近詞observations, observation, observation gallery, observation pattern, observation methods, observation program, observational group, observation service, observation systems, observational tools, observation spacing, observation network相似詞observation, observation car, observation deck, observation lounge, observation tower, observational, observatory, observe, 返回 observation post