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...
发烧时，大量水分会通过排汗而丧失。During fever a large quantity of fluid is lost in perspiration.这片风景中只有一排村庄。The landscape is broken only by a string of villages.持枪歹徒朝天扫射了一排子弹。A gunman fired off a volley of shots into the air....