| 回声探鱼仪 acoustic sounder |
| 回声探鱼法 echo ranging |
| 回声测深 echo depth sounding |
| 回声测深仪 sonic depth finder |
| 回声测距法 echoranging |
| 回声消失了 The echoes died away. |
| 回复 reply |
| 回复到原始文明 a reversion to a primitive c... |
| 回天 save a desperate situation |
| 回天之力 power capable of saving a de... |
| 回天乏术 have no plan to make improve... |
| 回头 turn one's head |
| 回头一想 on second thoughts |
| 回头一看 glance over one's shoulder |
| 回头再谈 We'll talk it over later. |
| 回头是岸 repent and be saved |
| 回头球 comebacker |
| 回头路 the road back to one's forme... |
| 回头采 relogging |
| 回头顾盼 turn round to look for someo... |
| 回娘家 visit the parental home |
| 回家 go home |
| 回师 return in triumph |
| 回帖 a money order receipt to be ... |
| 回廊 winding corridor |
