She was deriving a perverse pleasure from his discomfort.她为他的不安而幸灾乐祸。He seemed to be deriving amusement from her discomfort.他似乎在从她的不安中寻开心。So trade between the two nations has been something of a one-way street, with Cuba deriving the benefit.所以在两国的双边贸易中可以说只有古巴从中受惠。