英
美
- abbr. 觀察(=Observation)
- abbr. 瞭望台(=Observatory)
- abbr. 已廢的(=Obsolete)
- abbr. 無線電定向標選擇器(=Omnibearing Selector)
- 今日熱詞
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries