背着: turning one's back to (sth or sb), keeping sth secret from (sb), keeping (one's hands) behind one's back...
下调: to adjust downwards, to lower (prices, wages etc)...
为难: to feel embarrassed or awkward, to make things difficult (for someone), to find things difficult (to do or manage)...
翻来覆去: to toss and turn (sleeplessly), again and again...
对不起: unworthy, to let down, I'm sorry, excuse me, pardon me, if you please, sorry (please repeat)...
车主: vehicle owner...
确定: definite, certain, fixed, to fix (on sth), to determine, to be sure, to ensure, to make certain, to ascertain, to clinch, to recognize, to confirm, OK (on computer dialog box)...
换: to exchange, to change (clothes etc), to substitute, to switch, to convert (currency)...
别: leave, depart, separate, distinguish, classify, other, another, do not, must not, to pin, contrary, difficult, awkward...
抵触: to conflict, to contradict...
