ด้วยกัน, ช่วยเหลือซึ่งกันและกัน, การชนะ, การทำงานเป็นทีม, คน, หิน, ช่วยด้วย, การอบรม, แรงจูงใจ
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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