But since its peak in September, it has dropped by 13% against a basket of currencies.

但自9月份达到顶峰以来，美元对一揽子货币的汇率已经下跌了13%。

Libra will be backed up by a basket of currencies, such as the dollar, euro and yen.

Libra将得到一篮子货币的支持，如美元、欧元和日元。