A：So how long have you known Mary?那你认识玛丽多久了?
B：Only four days.只四天。
A：Only four days! That's so short, and you seem so crazy about her.只四天!这么短时间你就对她如此痴迷。
B：I know. I can't help thinking about her. She's always on my mind.我知道。我无法不想她，她总在我脑海里