VOA慢速英语:从猴子到土豆

silly – adj. not serious, meaningful, or important

act up – v. to act in an unruly, abnormal, or annoying way

reveal – v. to make (something) known

previously – adv. existing or happening before the present time

lazy – adj. not liking to work hard or to be active

boring – adj. dull and uninteresting

spoil – v. to have a bad effect on (something) : to damage or ruin (something)

trait – n. a quality that makes one person or thing different from another

landlord – n. a person who owns a house, apartment, etc., and rents it to other people