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sound [英] [saʊnd] [美] [saʊnd] [名] 声音;声响 [动] 响;听起来 [形] 健全的;完好的;合理的;可靠的;酣睡的 词频排名 799/55435 学习人数 121921 难度等级 5/10 认知比例 80.46% 例句 It's a sound investment. 这是可靠的投资。 "If we are ever going to protect the atmosphere, it is crucial that those new plants be environmentally sound." (考研)如果我们想要保护大气,那么关键是要让这些新发电厂对环境无害。 But don't sound any alarms just yet. (考研)不过还完全不至于拉响警报 助记 联想 GRE 牢固的 不可动摇的 健康的 强壮的 严谨的
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