(an amount that is) more than is needed

The world is now producing large food surpluses. 世界上目前生产的食品大大过剩。

We are unlikely to produce any surplus this year. 我们今年不太可能有任何盈余。

The government has authorized the army to sell its surplus weapons. 政府已经授权军队出售多余的武器。

UK The store is selling off stock that is surplus to requirements (= more than they need to have). 这家商店正在甩卖多余的存货。

the amount of money you have left when you sell more than you buy, or spend less than you own

a budget/trade surplus 预算结余／贸易顺差

Fortunately the company's bank account is currently in surplus. 幸好目前公司的银行账户里还有结余。