Alkanes are resistant to attack by oxidizing agents generally.烷烃一般对于氧化剂的作用是稳定的.The general uses of alkanes may be divided into three categories.烷的一般用途可分为三个方面.The straight - chain alkanes exacerbate the problem of engine ...
跑道两侧都是很陡的斜坡。On either side of the tracks the ground fell away sharply.人们只得在陡峭而泥泞的斜坡上艰难地行进。The men had to slog up a steep muddy incline.他抬头看了看屋后的斜坡。He looked up the slope of land that rose from the house....
Coleman has never wavered in his claim that he is innocent.科尔曼坚称他是无辜的。This time his voice wavered badly.这次他声音颤得厉害。His voice wavered with emotion.他激动得嗓音发抖。...