fast and furious
1. 喧腾地
Later in the morning, the customers came fast and furious.
近中午时, 顾客们络绎而来。
play fast and loose
1. 玩弄; 反复无常
How can you play fast and loose with a girl's affections?
你怎么可以玩弄一个姑娘的感情呢?
stand fast
1. 不让步
In face of danger, she stood fast and showed her courage.
面临危险, 她毫不让步, 表现出了勇气。