Take the margin ratio of 1: 100 as an example:

For example, at present, the euro against the US dollar is 1.4000, but for fundamental reasons or other reasons, you think that after 1 month, the euro will fall by 1.2000, which means that the euro will depreciate and the dollar will appreciate, so you have to buy dollars and sell euros, but you don't have that much money in your hand. You mortgaged your 1000 USD to the bank, borrowed 100000 EUR and bought 140000 USD. Two months later, the euro fell to 1.2000 USD, so you bought back 120000 USD from the 140000 USD. This is the short-selling mechanism and leverage of foreign exchange margin trading. In fact, shorting the dollar is the same as shorting the euro. Think about it the other way around.

If you want to make foreign exchange margin, you can choose TMG platform, which can be used as the dollar index of foreign exchange gold, silver and crude oil, and it is one of the three major algorithms in the world, which is very reliable.