关于

about; regarding; on; for; in; with; to; of; into; after; over; towards; concerning; respecting; re; touching; -wise; thereto; bout; concern; relate; relate to; pertain; pertain to; be about; involve; regard; refer to; deal with; appertain to; relative to; be-; with respect to; pertaining to; in relation to; as for; in regard to; with regard to; in terms of; in the way of; in reference to; with reference to; as regards; in respect of; as far as is concerned

长城

the Great Wall; the Great Wall of China

介绍

introduce; present; recommend; brief; profile; unveil; introduction; presentation; referral; recommendation; intro; orientation; introductory; presentational