| 四声道录声 four-track recording |
| 四声道录音机 quadrosonic recorder |
| 四声道磁带 four-track tape |
| 四声道立体声 quadraphonics |
| 四声道立体声收音机 stereo |
| 四声道立体声耳机 quadruple stereophone |
| 四声道音响设备 4-channel stereoset |
| 四处 all around |
| 四处受敌 find oneself hemmed in on ev... |
| 四处奔窜 flee about in all directions |
| 四处奔走 rush purposefully here and t... |
| 四处奔走寻找 search high and low |
| 四处奔跑 dash about |
| 四处张扬 publicize everywhere |
| 四处搜寻 ferret about |
| 四处搜索 search everywhere for huntin... |
| 四处横行 run amuck everywhere |
| 四处碰壁 get into trouble on all side... |
| 四处蔓延 run wild |
| 四处逃窜 flee in all directions |
| 四外 all around |
| 四大 speaking out freely,airing v... |
| 四大皆空 All space-directions are voi... |
| 四大自由 ""four freedoms"" |
| 四大金刚 four guardian warriors |
