ADV
就此;与此相关
Thereon can be used to refer back to a thing that has previously been mentioned to show that the word just used relates to that thing.
例句
You will, in addition, pay to the Bank any losses, costs, expenses or legal fees (including VAT thereon).
另外，你还须向银行支付所有损失、成本、花销和法律费用(包括与此相关的增值税)。