资料来源 : pyDict

偏向一方的,只有一边的,只生在一边的,侧的

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Secund \Se"cund\, a. [L. secundus following the course or
   current of wind of water. See {Second}, a.] (Bot.)
   Arranged on one side only, as flowers or leaves on a stalk.
   --Gray.