scratch your back

• vt. 帮助

scratch your back的用法和样例：

例句

用作及物动词 (vt.)

1. Thank you for your kind offer of help.
   感谢你想给予帮助的好意。
2. Dick started a radio from scratch.
   狄克在无人帮助的情况下自己装了一台收音机。