1.好偷窃的（形容词）;2.手指灵活的（形容词）

1. (adjective) Describing a person who often steals, particularly who steals small things.2. (adjective) Nimble; able to use the hands quickly and skillfully.

EXAMPLE: Our store’s watchful security guards look for light-fingered customers.

我们商店警惕的安保搜寻好偷的顾客。

EXAMPLE: Only the most light-fingered people can make a long string of pearls in a couple minutes.

只有手指最灵活的人才能数分钟内做出一长串珍珠链。

to mean business

说真的（非正式）

(INFORMAL) To be serious; to be committed to fulfilling a threat, promise, or plan; to be unwilling to be stopped by anything.

EXAMPLE: My sister is a hard-working and sometimes ruthless executive, and when she says she wants to accomplish something, she means business.

我妹妹是位工作努力，有时很玩命的高管，当她说要做到什么事，她是认真的。