fire co-operator 义务护林员
co console operator 控制台操作员
Co-generator operator 电气操作工
best co-approximation operator 最佳共逼近算子
co-analytic Toeplitz operator 余解析Toeplitz算子
·2,447,543篇论文数据，部分数据来源于NoteExpress
Busch Entertainment Corp. is the second largest theme park operator in the United States with 25 million annual visitors, again second only to the Walt Disney co.
而Busch娱乐集团是美国第二大的主题公园运营商，每年接待游客2500万人次，仅次于迪士尼公司。
The owner and operator of that mine, the San Esteban Mining Co., did not complete promised improvements to the mine where the men were trapped for 70 days, 2,300 feet (701 meters) underground.
该矿山矿主和运营者，圣埃斯特凡矿业有限公司，没有按承诺对矿井进行改善，致使矿工被困在2300英尺（701米）深的井下达70天。
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