They must be valuable
价值───value;一定───certain
An expert came to appraise the value of my antiques.───一位专家来对我的古玩作了估价.
She's kicked her drug habit and learned that her life has value.───她已经戒了毒,并且认识到了生命可贵。
The doctrine of surplus value is the cornerstone of Marx's economic theory.───剩余价值学说是马克思经济理论的基石.
The show was good entertainment value.───这场演出有很大的娱乐价值。
It is a good piece of furniture and I want to give value for value.───这件家具不错,我愿按价付款.
I want to plant the slopes of the hills with trees of economic value.───我想在山坡上种经济树木.
The house has doubled in value since I bought it.───自从我买下这幢房子以来,它的价值已增加了一倍.
If they value these data, let them pay for them.───他们要是看重这些数据,就让他们出钱买。