If you treble the distance, the gravitational attraction gets nine times weaker.如将距离增大两倍, 则其万有引力就减小九分之八.Many asteroids are weakly bound piles of rubble, held together by their own minute gravitational attraction.大多数的小行星都...
有一家诱人的带露天阳台的饭馆。There is an inviting restaurant with an outdoor terrace.乍一看，它就像个传统的村庄：带阳台的两层楼房坐落于精心照料的花园中。At first sight it resembles a traditional village of two-storeyed, balconied houses, set among well-tended gardens....
上个月激进分子对地方自治的呼声更高了。Activists stepped up their demands for local autonomy last month.殖民地正要求获得更大程度上的自治。The colonies were claiming a larger measure of self-government.该自治市与德国的卡瑟尔市结成了友好城市。The borough is twinned with Kasel in...
The croupiers'cries came thinly out into the night.赌头的喊声穿过夜色,依稀可辨.A decline in gambling would force croupiers and racing touts to seek more productive occupations.若赌风日衰,在赌场和赛马场营生的人就只好另谋更有效率的职业....