词汇	keep gravity
释义	keep gravity 保持严肃
随便看	direct spread direct spreading direct spread receiver direct spreads Direct spread signal direct spread spectrum direct spread system direct-spread uhra-wideband system direct spring loaded safety valve direct sprue gate direct-spun directspun yarn direct spun yarn direct-spun yarn direct stability direct staining direct staining method direct standard costing direct standardization direct start direct starting direct state budgetary expenditures direct statement direct statements direct station