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understand understood would understand had understood
understand to understand understanding understood
did I understand I understood I did understand have I understood
understand understood would understand had understood
did I understand I understood I did understand have I understood
I understand did I understand I did understand have I understood
understood with understand with understood in understand in
understood with understand with understood in understand in
did understand I understood I did understand have I understood
did I understand I understood I did understand have I understand
understand；understand understand；understood to understand；understand understand；to be understood
1.243104～1.243106eV 1.433102～71 eV 6.2 ～3.1 eV 3.1 ～1.65 eV
What I can’t understand it That I can’t understand What I can’t understand Which I can’t understand it
EV minus PV EV minus AC AC minus EV PV minus EV
＜12eV ＞12eV ＞18eV ＞18eV ＞24eV
To be; understand I'm ;to understand Being ;understanding Being; understood
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