英文解释： adjective: very generous
例句： Helen is unstinting with her time, often spending hours at the house of a sick friend.
英文解释： adjective: (of theories etc) incapable of being defended or justified
例句： With the combination of Kepler's brilliant theories and Galileo's telescopic observations, the old geocentric theory became untenable to most of the educated people in Europe.
英文解释： adjective: unfavorable; inconvenient
例句： Some professors find teaching untoward as having to prepare for lectures and conduct office hours prevents them from focusing on their research.
英文解释： adjective: not confined or limited
例句： untrammeled inspired the American Revolution and was enshrined in the Declaration of Independence and the Constitution.
英文解释： adjective: not able to work, survive, or succeed (also spelled inviable).
例句： The plan was obviously unviable considering that it lead to complete environmental destruction in the river valley.
英文解释： verb: to reproach; to scold
例句： Bob took a risk walking into the "Students Barbershop"—in the end he had to upbraidthe apparently drunk barber for giving him an uneven bowl cut.
英文解释： adjective: showing a high degree of refinement and the assurance that comes from wide social experience
例句： Because of his service as an intelligence officer and his refined tastes, W. Somerset Maugham became the inspiration for the urbane and sophistcate spy James Bond.
英文解释： verb: be undecided about something; waver between conflicting positions or courses of action
例句： Some students vacillate between schools when deciding which to attend, while others focus only on one school.
英文解释： adjective: devoid of intelligence, matter, or significance
例句： To the journalist's pointed question, the senator gave a vacuous response, mixing a few of his overall campaign slogans with platitudes and completely avoiding the controversial subject of the question.
英文解释： verb: come out better in a competition, race, or conflict
例句： For years, Argentina would dominate in World Cup qualifying matches, only to be vanquished by one of the European countries during the late stages of the tournament.