I invest a certain amount say $10 speculating that the price of USD/EUR will be higher than it is after 30 minutes.
ຂ້ອຍລົງທຶນຈໍານວນຫນຶ່ງເວົ້າວ່າ $ 10 speculating ວ່າລາຄາ USD / EUR ຈະສູງກ່ວາຫຼັງຈາກ 30 ນາທີ.