While this illegal activity was once commonplace, it happens less frequently now, owing to active policing by the Federal Securities and Exchange Commission.

虽然这种非法活动过去相当普遍，但现在由于联邦证券交易委员会的积极管制，这类活动少多了。

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It also liaises regularly with Mainland and overseas law enforcement agencies for exchange of intelligence to prevent and neutralise illegal activities.

该科更定期与内地和海外的执法机构联络，交换情报，消弭和防止非法活动。

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The police are going to clamp down on illegal stock exchange activities in the streets.

警察即将取缔街道上的非法证券交易。

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While demonstrators rampaged outside, a parliamentary committee was hearing evidence this week about an illegal exchange of land by Vatopedi monastery on Mount Athos.

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Yesterday, the Senate failed to call a vote on the DREAM Act, an amendment that would have let students who are illegal immigrants become citizens in exchange for government or military service.

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Backed by software-industry money, it offers rewards in exchange for any tips leading it to illegal factories.

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