We approach you today in the hope of establishing business relations with you and expect, by our joint effects, to enlarge our business scope.

今天，我方与贵公司联系想建立业务关系，并希望通过我们的共同努力，扩大我们的业务范围。

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To enlarge the scope of one's interests, business, or activities.

扩大某人的兴趣，业务，或活动范围。

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