中燕拥有自己的工厂和很多精湛技术的员工。
Zhongyan owns workshop and lots of highly skilled personnel.
秦皇岛中燕机械设备有限公司是中国最大的井下马达和管线产品供应商之一。
Qinhuangdao Zhongyan Machinery Co., Ltd is one of the largest suppliers of downhole motors and pipeline products in China.
雌鸟与雌鸟配对在其他鸟类中并不是没有，如加利福尼亚海鸥和粉红燕鸥，但从来没有达到这么高比例。
Female-female pairings have been observed in other birds, such as California gulls and roseate terns, but never at quite such a high rate.
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