over-the-counter

詳細解釋：

o.ver-the-count.er

adj.Abbr. OTC,O.T.C.（形容詞）縮寫 OTC,O.T.C.
Not listed or available on an officially recognized stock exchange but traded in direct negotiation between buyers and sellers:
買賣雙方直接交易的：沒有列入官方許可的股票交易，而是由買賣雙方直接協商而售出的：
例句：
over-the-counter stocks.
場外交易股票

That can be sold legally without a doctor`s prescription:
不需處方可以出售的：無醫生開的處方也可合法出售的：
例句：
over-the-counter drugs.
無醫生開的處方也可合法出售的藥