concave-up
基本解释
- adj.上凹的
英汉例句
- How much do all these figures stack up to?
这些数字的总和是多少？ - Swimming is the best way to tone up your body.
游泳是健体强身的最好方法。 - I believe he has started reading up anthropology.
我相信他已开始攻读人类学。 - It is now our aim to set up a factory.
我们现在的目的是创办一座工厂。 - I need a piece of string to tie this parcel up.
我需要一根细绳把这包裹扎起来。