premium怎么记忆

　　At the premium end of the market, business is booming.

　　高端市场业务繁荣。

　　He eventually sold the shares back to the bank at a premium.

　　他最后以高价把股票回售给银行。

　　Even if customers want 'solutions', most are not willing to pay a premium for them

　　即使顾客想得到“解决方案”，他们大多数也不愿意为此支付额外费用。