Hold on AF zoom out during power on test main board,but can

Hold on AF zoom out during power on test main board,but can hold on power是什么意思呢? COME ON I THINK YOU CAN DO THEM HOLD OUT hold on ,hold up,hold to,hold out分别 on board,on the board 翻译：zoom on haifshutter POST stands for Power-On-Self- Test.怎么翻译 power cycle stress test :on off什么意思 hold on 和 hold out 有什么区别? "Hold on to the test for time being."怎么理解? I can write on the board with my hands .write on the board（划 How long we can hold on love?