earth observation preparatory programme地球: the earth; the globe观测: observe; observation; viewin ...筹备: prepare; arrange方案: scheme; plan; programme; pro ...对地球观测: earth observing下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:地球观测筹备方案,即可在微信中查询翻译