数学の問題とペンと電卓
Palabras clave
mathematical,
difficulty,
response,
pen,
lead pencil,
mechanical pencil,
table,
table,
copy space,
noto,
write,
exam,
study,
school,
homework,
training,
final,
exam,
ball pen,
high school,
figure,
handwriting,
eraser,
room,
learning,
flair,
wisdom
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