under

      在（或到、通过）…下面in, to or through a position that is below sth

      在…表面下；由…覆盖着below the surface of sth; covered by sth

      少于；小于；不足；比…年轻less than; younger than

      由…控制（或管理、经营）used to say who or what controls, governs or manages sb/sth

      根据，按照（协议、法律或制度）according to an agreement, a law or a system

      在…过程中experiencing a particular process

      由…造成；受…影响affected by sth

      用，以（某一名字）using a particular name

      在…项下；在（书等中的）某部分found in a particular part of a book, list, etc.