stock-in-trade

剑桥词典

the typical characteristics or behaviour of someone or something
典型特點；典型行爲；慣用手法
The song was perfect for the soft vocals that are her stock-in-trade. 這首歌非常適郃用她最爲擅長的柔聲唱法縯唱。
old-fashioned
the tools and other objects that you need for your job
（某項工作的）用具設備 返回 stock-in-trade