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Chinese teacher: Life has only commas, dashes and ellipsis, and there is no period. Physics teacher, math teacher: parody, how to write it?
Physics teacher: Life can have support, gravity and gravity, but it can't be without friction.

The chemistry teacher said that life only solidifies, liquefies and melts, and there is no sublimation.

The physics teacher said that there are only paths, closed circuits, short circuits and no open circuits in life.

The math teacher said that life has straight lines, curves and wavy lines, but there is no dotted line.