他们还开展旨在扩充人类对这些学科知识的研究工作。
They also carry out research work aimed at extending man's knowledge of these subjects.
他们还开展了“马戏团之外”的课外计划，教孩子们扮演小丑、体操和戏法。
They also started "Beyond the Ring," an afterschool program which teaches kids clowning, acrobatics and juggling.
除开展联合巡逻外，他们还共同启动了检查站的人员配备。
In addition to staging joint patrols, they have started manning checkpoints together.
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