1. 他的钱只许进不许出，大家都叫他钱串子。
He just takes money in without letting it out, everyone calls a money bags.
2. 他是个钱串子。
He is money-oriented.
3. 他家那个钱串子，是他爷爷遗留下来的。
The cash string of his family was left by his grandpa.
4. 切变率与红细胞钱串体大小对血液粘度的影响
Effects of shear rate and rouleaux size of red blood cells on blood viscosity