? (com-) col- : together, with ? collaborate ? colleague ? collocate ? collinear ? collusion ? collision (head-on collision)
? ver-: turn ? avert (away + turn): 转移、避免 ? convert (together + turn) : 改变(信仰), 皈依 ? invert (upside down) :颠倒 ? revert (again + turn): 回到、恢复 ? divert (away + turn): 转移注意力、娱乐
coach vs. lorry (truck) vs. van
Lancashire and Preston
? Lancashire, county, northwestern England; Preston is the administrative center. Lancashire comprises a lowland area in the west along the Irish Sea and an interior upland area. It is primarily an agricultural county; dairy farming, livestock raising, and the growing of vegetables are important activities. Textiles are also manufactured.
Downing Street, street in the West end of London. It is named in honor of Sir George Downing, secretary of the treasury in 1667. The official residence of the British prime minister, where cabinet meetings are often held, is located at No. 10. Also on Downing St. are the residence of the chancellor of the Exchequer and the Foreign Office. The term Downing Street is often used to mean the British government.
? musician ? magician ? physician ? beautician ? politician ? 以-cian结尾表示“人”时，重音在 字尾前一个音节
Daylight Saving Time
? Daylight Saving Time, system of setting clocks 1 hour ahead so that both sunrise and sunset occur at a later hour, producing an additional period of daylight in the evening. Daylight saving has been used in the United States and in many European countries since World War I, when the system was adopted in order to conserve fuel needed to produce electric power. During World War II the U.S. Congress passed a law putting the entire country on “war time,” which set clocks 1 hour ahead of standard time for the duration of the war. Under one legislation enacted in 1986, daylight saving time begins at 2 am on the first Sunday of April and ends at 2 am on the last Sunday of October.
Astronaut Alan B. Shepard completed the first piloted flight of the United States space program onboard Freedom 7 on May 5, 1961. After 15 minutes 22 seconds of flight, the capsule splashed down into the Atlantic Ocean, where Shepard was picked up by a naval helicopter, hovering above the capsule.
Celsius vs. Fahrenheit
? Two different temperature scales are widely used today: the Celsius scale, known also as the Centigrade scale, and the Fahrenheit scale. The Celsius scale, with a freezing point of 0° C and a boiling point of 100° C, is widely used throughout the world, particularly for scientific work. In the Fahrenheit scale, used in English-speaking countries for purposes other than scientific work and based on the mercury thermometer, the freezing point of water is defined as 32° F and the boiling point as 212° F. ? Celsius and Fahrenheit temperatures can be interconverted as follows