close in upon造句

• At the same moment our forces were closing in upon the enemy
  与此同时,我军一步步向敌人逼近。
• It was horrible to see the mob close in upon their victim
  看到一群暴徒包围了受害者，真令人毛骨悚然。
• ( 2 ) the high accurate plate motion model of itrf2000vel is obtained with appropriate observation sites whose deformations close in upon the rigid motion of plate through circulations of many times , and then several absolute plate motion models are established and evaluated
  使板块台站形变向刚性板块运动逼近，通过多次循环，从而唯一确定各板块的刚性台站，更好地确定高精度板块运动模型itrf2000vel ，并建立和评价与之自恰的几种绝对板块运动模型。