到了20世纪30年代，手表几乎完全取代了怀表。By the 1930s the wristwatch had almost completely supplanted the pocket watch.“ 5点1刻, " 她身边的伙伴看了看一只精致的敞面怀表,说道." A quarter after five,'said her companion, consulting an elegant, open - faced wa...
矿井中用钢制通风机来保持空气流通。The pit is ventilated by a steel fan.螺旋式通风机从壁孔中排出空气.Propeller fans exhaust air through holes in the wall.窗上的通风机发出了耳语般轻微的嗡嗡声.The fan at the window made a small whispering roar....
Some stretches of beach are completely underwater at high tide...海滩上有些地方在涨潮时完全淹没在水中。...an underwater outlet pipe discharging waste into the sea.排污入海的水下管道The ship was underwater when they reached her.他们赶到那艘船时,船已沉到水里了.A ga...
每年他们都要参加著名的全州自行车大赛。Each year they compete in a prominent statewide bicycle race.他担任过改装赛车大赛的主持人。He acted as grand marshal of a stock car race.NBA大赛the National Basketball Association Championship...
城市灰尘是城市环境学研究的对象之一.Urban dust constitutes an important problem in urban environmental science.这一计算方法不具有环境学和生态学方面的意义.The budgetary method doesn't have the meaning of environmental science and ecology.作为一名曾经的商人, 他现在已经成...