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开学典礼
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DEFINITIVE EXAMPLES 权威例句〔rattle on〕Our headmaster rattled on for at least two hours at the opening ceremony.我们的校长在开学典礼上唠唠叨叨地讲了至少两个小时。21世纪英汉
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catalyst transfer line
catalyst tube
catalyst unit
catalyst up-flow principle
catalyst volume
catalyst wax
catalyst weight
catalyst-oil disengagement
catalyst-oil ratio
catalyst-oil suspension
catalyst-packed column
catalyst-to-charge ratio
catalyst-to-crude ratio
catalyst-to-oil ratio
catalysts
catalysts
catalysts for environmental protection
catalytic
catalytic
catalytic
catalytic
catalytic action
catalytic active site
catalytic activity
catalytic afterburner
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更新时间:2026/5/13 18:34:47