- killer well
- relief well
- 救援: rescue; come to sb.'s help
- 井: well
- 备用救援井: stand-by relief hole
- 放空孔；救援井: relief hole; relieving device
- 救援: rescue; come to sb.'s help [rescue]: 紧急关头的救援 a last minute rescue; 这时他们都来救援他。then they all came to his rescue. 将军火速前往救援该要塞。 the general hastened to the relief of the fortress.◇救援车 rescue car; [机械工程] recovery vehicle; breakdown van; 救援船 salvor; 救援列车 breakdown train; relief train
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