背面靠近

onto- onto back-to-back back to back cast sth. behind one's back break the back of sth. put one's back into sth. confess to doing sth. do sth. to admiration stand up to sth. be enslaved to sth. bring sth. to light to bite sth back bring sth back to normality hold onto sth hang onto sth put sb onto sth to cast sth behind one's back to break the back of sth to put one's back into sth one-to-one onto mapping onto relate sth to sth