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1.via v. 经过；通过，凭借
例句：The technology to allow relief workers to contact the outside world via satellite already exists.
能够让救援人员通过卫星与外界联系的技术已经存在。
2.employ v. 使用；采用
例句：The tactics the police are now to employ are definitely uncompromising.
警方目前即将采取的策略明显很强硬。
