If you were running a race, and you passed the person in 2nd place, what place would you be in now?
You would be in 2nd. You thought first place, right? Well, you passed the guy in second place, not first.
Lại nước giải khát nào chứa sắt và canxi?
Cafe (theo kí hiệu hóa học thì Ca là canxi, Fe là sắt)