《石油工程专业英语》P72 Fill in the blanks with the following phrases and expressions. by contrast in contrast to irrespective of rather than with respect to be expressed as 1) This one costs more but is really cheaper . 2) He resigned be transferred. 3) The pores can be classified their generation. 4) The permeability of rocks commonly English letter K. 5) The children go to school the weather. 6) The origin of crude oil is complicated its refining.