什么是"Press space"

什么是Press space Press Space+L press space to 如题 PRESS'SPACE TO ENTER THE press space bar to stare press space to star the Press SPACE to switch between games Press the space bar again to continue playing. mission complete PRESS SPACE BAR TO CONTINUE什么意思 Press the space bar again to continue playing. Erasing free space 和 Press the home button to cancel 什么是SPACE矩阵? to perform a stomp move firstly press(space bar),(space bar)to do a clouble jump press space bar to exit setup 我在装一驱动时 遇到这样的提示 [press space bar to exit setup] During a garpple swing,press space to release the grapping hook and JUMP OFF 是什么意思? 为什么是Travel in space 而不是Travel in the space space space