หน้ากาก, มือ, กระดานดำ, โรงเรียน, การป้องกัน, หน้ากาก Ffp2, ป้องกันปาก, มาลา, โควิด -19
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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