数学是科学的皇后 - 高斯
Looks Like Physics:
寒假回家了 我也试试~~ kqedscience: popmech: Chilly. Way cool.
寒假回家了 我也试试~~
kqedscience:
popmech: Chilly. Way cool.
popmech:
Chilly.
Way cool.
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