... headstok centre活顶尖 hear utilization废热利用 heart cam心形凸轮 ...
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At our recent General Assembly held in the United States, we had the pleasure to hear a keynote speech delivered by the Manager of Asset Utilization from Shell Chemicals.
在近期美国举行的基金会大会上，我们有幸听取了壳牌化学公司资产利用经理所发表的主题演讲。
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