词汇	sit in classes
释义	sit in classes 听课
随便看	emergency strap-on chain emergency Strategies emergency strategy emergency strating compressor emergency stratum emergency stretcher Emergency Strike Effort emergency strip emergency succor emergency succor pre-project emergency summit emergency supervision emergency supervisory equipment emergency-supplied emergency supplies emergency supply emergency supply chain emergency supply circuit emergency supply of water Emergency Supply Operation Center Emergency Supply Planning Branch emergency supply sources emergency supply valve emergency support emergency support brigade