1. I worked hard on the project but got the shaft when the promotion was given.
我在项目上很努力，但晋升却落空了。

2. She got the shaft in the deal because the contract was unfair.
她在交易中吃了亏，因为合同不公平。

3. He felt like he got the shaft when no one acknowledged his efforts.
当没人认可他的努力时，他觉得自己受到了不公平待遇。

A: Did you get a raise this year?
A：你今年加薪了吗？

B: No, I got the shaft again.
B：没有，我又吃了亏。

A: How was the deal with the supplier?
A：和供应商的交易怎么样？

B: Honestly, I got the shaft. It wasn't fair.
B：老实说，我吃了亏，太不公平了。

1) 遭受不公平待遇

2) 被欺骗或利用

3) 在利益分配中吃亏

1. 被不公平对待或吃亏

e.g. He worked overtime but got the shaft when the bonus was given.
他加班工作，但发奖金时却吃了亏。

2. 在交易或合作中受损或被骗

e.g. She got the shaft on the contract because the terms were unfair.
合同条款不公平，她因此吃了亏。

idiom

1. To be treated unfairly, to suffer a loss, or to be cheated in a situation.

Synonym: be treated unfairly, get the short end of the stick