你真是小心眼儿！

You're being Petty!

他这人小心眼儿。

He's got a small mind.

穿绸旗袍的蒋夫人像小猫似地很迷人。她可以像一个男女同校的大学女生一样忸怩作态，也可以像看管女生宿舍的大妈一样威严和小心眼儿。

Madame Chiang always stunning in her silk gowns could be as coy and kittenish as a college coed or as commanding and petty as a dormitory house mother.