keep ·phrasal verb

Definition: to not go near something, or to prevent someone or something from going past a particular place Level: B2

警察努力阻止人群靠近。

The police struggled to ___keep the crowd ___back.

保安试图阻止抗议者接近入口。

Security guards tried to ___keep the protesters ___back from the entrance.

请让你的孩子们远离站台边缘。

Please ___keep your children ___back from the edge of the platform.

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