这些包括人工收集，使用诱饵吸引蚂蚁，地面垃圾取样，以及使用陷阱诱捕。

These include hand collecting, using baits to attract the ants, ground litter sampling, and the use of pitfall traps.

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陷阱和通知目标以及事件订阅在向SNMP管理器发送事件警报中是必需的。

Trap and notification targets and event subscriptions are required in sending event alerts to an SNMP manager.

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尽管对于目前已持有的美国国债，中国几乎做不了什么，但中国可以反思过往的政策——问问自己是怎样落入这个陷阱的，以及如何摆脱。

While there is little China can do about its existing Treasury holdings, it can rethink past policies - and ask both how it fell into this trap, and how it might free itself.

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