Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
access – n. a way of being able to use or get something
sewage – n. waste material that is carried away from homes and other buildings in a system of pipes
sanitation – n. the process of keeping places free from dirt, infection and disease by removing waste and garbage
hygiene – n. the things that you do to keep yourself and your surroundings clean in order to maintain good health
opportunity – n. a chance to do something
tap – n. a device for controlling the flow of a liquid or gas from a pipe or container
infrastructure – n. the basic equipment and structures (such as roads and bridges) that are needed for a country or place to function properly
