这家银行专门为频繁更换信用卡的客户设计了特别的优惠方案。

This bank designed special offers specifically for ___churners who frequently switch credit cards.

这台电动搅拌器比传统的手摇式黄油搅拌器效率高得多。

This electric ___churner works much faster than the traditional hand-cranked butter maker.

她是个典型的工作变动狂，每六个月就换一次工作。

She's a habitual ___churner, switching jobs every six months.