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cloud seeding [英] [klaʊd ˈsi:dɪŋ] [美] [klaʊd ˈsidɪŋ] [短语] 人工降雨 词频排名 38912/55435 学习人数 2 难度等级 2/10 认知比例 N/A 例句 The flight failed to carry out the cloud seeding operation. 这次飞行未能进行人工降雨作业。 The government is using cloud seeding to try to produce rain for farmers. 政府经用人工降雨来为农民制造降雨 助记 联想 precipitation
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