前后: around; about直: straight; stiff排: arrange; put in order的: 4次方是 The fourth power of 2 i ...前后直排: tandem前后直排地: tandem直排的: colinear; collinear前后纵排的两匹马或马车: tandem前后: 1.(时间接近) around; about 春节前后 around the spring festival2.(自始至终) from start to finish; from beginning to end; altogether 这篇小说从动笔到定稿, 前后用了一年时间。 the novel took a year to write altogether, from start to finish. 他前后来过四五次。 he has been here four or five times altogether.3.(前面和后面) front and back 受到前后围攻 be attacked both front and back; be caught between two fires; 房子前后都是果树。 there are fruit trees in front and at the back of the house后直裆: back rise直排轮: roller skating成排的: bank 1单排的: single row; singlerow; uniserial等排的: isosteric多排的: multi-bank复排的: multibank密排的: close-packed双排的: two-bank纵排的: tandem后直裆长: back rise后直蛏属: orthonota向后直角下: double rear screw dismount向后直体: flank left rearway; flank left reaways写后直读: direct read after write; direct reading after writing; draw写后直读盘: direct read-after-write disc