短語(yǔ)詞組短語(yǔ)jumping -off point n. 起點(diǎn)；出發(fā)點(diǎn)developmental jumping -off teprature 發(fā)育起點(diǎn)溫度Jumping -off point coordinate 起點(diǎn)坐標(biāo) 返回 jumping-off