Area in the country's largest inland port, the annual immigration from the Lo Wu Control Point in the number over 100 million people.

辖区内有全国最大的内陆口岸，每年从罗湖口岸出入境的人数超过1亿人次。

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With further mention of topical issues such as immigration reform and gun control, Obama came to his key point -- that adhering to America's bedrock principles requires taking action on today's challenges.

CNN: Obama's speech ties current issues to founding principles