adv. By which; -- used relatively.
adv. By what; how; -- used interrogatively.
adv. 靠什么, 如何, 为何, 靠那个, 因此, 由此
[法] 因此, 由是
1. The company has a policy whereby employees can work from home.
这家公司有一项政策，员工可以在家工作。
2. She signed a contract whereby she agreed to complete the project by next month.
她签署了一份合同，承诺在下个月之前完成项目。
3. They established a system whereby customers can easily return products.
他们建立了一个系统，客户可以轻松退货。