pumice correcting pencil
/ˈpjuːmɪs kəɹˈɛktɪŋ ˈpɛnsəl/
n
English · pumice correcting pencil中文 · 浮石修正笔Español · lápiz corrector de piedra pómezFrançais · crayon de pierre ponce
意味：Instrument used to polish the stone and make corrections to the figure.