VOA慢速英语:印度妇女发明能拯救生命的肥皂

entrepreneur – n. one who organizes, manages, and assumes the risks of a business or enterprise

habit – n. something that a person does often in a regular and repeated way

proper – adj. behaving in a way that is correct according to social or moral rules : in a complete way

rollercoaster – n. an elevated railway (as in an amusement park) constructed with sharp curves and steep inclines on which cars roll : roller-coaster – adj. something resembling a roller coaster especially : marked by numerous ups and downs : behavior, events, or experiences characterized by sudden and extreme changes

challenging – adj. difficult in a way that is usually interesting or enjoyable

envision – v. to picture to oneself

impact – n. a powerful or major influence or effect

lather – v. a foam or froth formed when a detergent (such as soap) is agitated in water

scrub – v. to clean with hard rubbing

rinse – v. to cleanse (as of soap) by clear water