农民担心塑料圣诞树可能会取代真正的圣诞树

artificial --adj. not natural or real; made, produced, or done to seem like something natural

decorate –v. to make something more attractive by placing something on it

figure out –v. to understand or find by thinking

allergy –n. a condition that causes someone to become sick after eating, touching or breathing something that is harmless to most people