trade-weighted exchange rate index of Hong Kong dollar

例句：

1. 1. The trade-weighted exchange rate index of Hong Kong dollars has been steadily increasing since the start of the year.
   自年初以来，香港元的交易加权汇率指数一直在稳步上升。
2. 2. This index is used to measure the strength of the Hong Kong dollar against other currencies.
   这个指数被用来衡量港元相对于其他货币的强弱。
3. 3.The trade-weighted exchange rate index of Hong Kong dollars has a significant impact on the overall economic performance of Hong Kong.
   香港元的交易加权汇率指数对香港的整体经济表现有重大影响。