单词 | strontium |
例句 | DEFINITIVE EXAMPLES 权威例句〔red fire〕Any of various combustible compounds, especially salts of lithium or strontium, that burn bright red and are used in flares and fireworks.红火焰:一种火焰为明红色且用于火炬和焰火可燃化合物,特别是锂盐和锶盐美国传统 |
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