纸上谈兵【zhǐ shàng tán bīng】
be an armchair strategist; engage in idle theorizing
[成]比喻空谈理论不联系实际
要注重实践,别总是纸上谈兵。
One should practice more instead of engaging in idle theorizing.
指【zhǐ】
1. finger 2. point at; point to 3. refer to
[名]1、手指,手掌的五个终端部分之一 [动]2、对着,向着 3、表示
人们常用竖起大拇指来表示称赞。
People often give a thumbs-up sign to show their praise.
现在时针指向十二点。
The hour hand points to 12 o'clock.
老师指出了我文章中的不足。
The teacher pointed out the defects in my composition.