数羊Count sheep eg. I usually count sheep if I can’t goto sleep.

数卡路里She’s counting calories.  A glass or two of wine will not significantly add to the calorie count.

数有种Stand (up) and be counted: eg. Those who did have the courage to stand up and be counted were arrested and imprisoned.那些有勇气站出来表明自己立场的人都被捕入狱了。

屈指可数Could count on one hand eg. The number of new banks started over the past decade could almost be counted on one hand.

数钱count a stack of dollar bills