VOA慢速英语:重建波多黎各可能有助于提高科学教育

sewer – n. pipes buried underground that carry water and waste

infrastructure – n. the roads, structures and public services that are needed for a city of area to operate properly

proficient – adj. very good at something

relevant – adj. relating to something in a useful way

impact – v. affect something in a powerful way

potable – adj. safe to drink

access – n. ability to use or get something

empower – v. give power to

critical – adj. using or involving careful judgment about the good and bad parts of something